Peikari, Mohammad; Chen, Thomas K.; Fichtinger, Gabor; Burdette, E. Clif
Section-Thickness Profiling for Brachytherapy Ultrasound Guidance Conference
SPIE Medical Imaging, vol. 7964, no. 1, SPIE SPIE, Lake Buena Vista (Orlando), Florida, USA, 2011, ISBN: 9780819485069.
@conference{MPeikari2011b,
title = {Section-Thickness Profiling for Brachytherapy Ultrasound Guidance},
author = {Mohammad Peikari and Thomas K. Chen and Gabor Fichtinger and E. Clif Burdette},
url = {http://link.aip.org/link/?PSI/7964/79640R/1
https://labs.cs.queensu.ca/perklab/wp-content/uploads/sites/3/2024/02/Peikari-SPIE2011.pdf},
doi = {10.1117/12.877993},
isbn = {9780819485069},
year = {2011},
date = {2011-03-01},
urldate = {2011-03-01},
booktitle = {SPIE Medical Imaging},
volume = {7964},
number = {1},
pages = {79640R},
publisher = {SPIE},
address = {Lake Buena Vista (Orlando), Florida, USA},
organization = {SPIE},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Weiss, Clifford; R.Marker, David; Fischer, Gregory; Fichtinger, Gabor; Machado, Antonio J.; Carrino, John A
In: American Journal of Roentgenology, vol. 196, no. 3, pp. W305 - W307, 2011.
@article{Weiss2009b,
title = {Augmented Reality Visualization for MR-guided Interventions using "Image Overlay": System Description, Feasibility, and Initial Evaluation in a spine phantom},
author = {Clifford Weiss and David R.Marker and Gregory Fischer and Gabor Fichtinger and Antonio J. Machado and John A Carrino},
url = {https://labs.cs.queensu.ca/perklab/wp-content/uploads/sites/3/2024/03/W305.full_.pdf},
year = {2011},
date = {2011-03-01},
urldate = {2011-03-01},
journal = {American Journal of Roentgenology},
volume = {196},
number = {3},
pages = {W305 - W307},
keywords = {},
pubstate = {published},
tppubtype = {article}
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Krieger, Axel; Song, Sang-Eun; Cho, Nathan Bongjoon; Iordachita, Iulian I; Guion, Peter; Fichtinger, Gabor; Whitcomb, Louis L
Development and evaluation of an actuated MRI-compatible robotic system for MRI-guided prostate intervention Journal Article
In: IEEE/ASME Transactions on Mechatronics, vol. 18, iss. 1, pp. 273-284, 2011.
@article{fichtinger2011,
title = {Development and evaluation of an actuated MRI-compatible robotic system for MRI-guided prostate intervention},
author = {Axel Krieger and Sang-Eun Song and Nathan Bongjoon Cho and Iulian I Iordachita and Peter Guion and Gabor Fichtinger and Louis L Whitcomb},
url = {https://ieeexplore.ieee.org/abstract/document/6047576/},
year = {2011},
date = {2011-01-01},
journal = {IEEE/ASME Transactions on Mechatronics},
volume = {18},
issue = {1},
pages = {273-284},
publisher = {IEEE},
abstract = {This paper reports the design, development, and magnetic resonance imaging (MRI) compatibility evaluation of an actuated transrectal prostate robot for MRI-guided needle intervention in the prostate. The robot performs actuated needle MRI guidance with the goals of providing 1) MRI compatibility; 2) MRI-guided needle placement with accuracy sufficient for targeting clinically significant prostate cancer foci; 3) reducing interventional procedure times (thus increasing patient comfort and reducing opportunity for needle targeting error due to patient motion); 4) enabling real-time MRI monitoring of interventional procedures; and 5) reducing the opportunities for error that arise in manually actuated needle placement. The design of the robot, employing piezoceramic-motor actuated needle guide positioning and manual needle insertion, is reported. Results of an MRI compatibility study show no reduction of MRI signal …},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
This paper reports the design, development, and magnetic resonance imaging (MRI) compatibility evaluation of an actuated transrectal prostate robot for MRI-guided needle intervention in the prostate. The robot performs actuated needle MRI guidance with the goals of providing 1) MRI compatibility; 2) MRI-guided needle placement with accuracy sufficient for targeting clinically significant prostate cancer foci; 3) reducing interventional procedure times (thus increasing patient comfort and reducing opportunity for needle targeting error due to patient motion); 4) enabling real-time MRI monitoring of interventional procedures; and 5) reducing the opportunities for error that arise in manually actuated needle placement. The design of the robot, employing piezoceramic-motor actuated needle guide positioning and manual needle insertion, is reported. Results of an MRI compatibility study show no reduction of MRI signal …
Krieger, Axel; Iordachita, Iulian I; Guion, Peter; Singh, Anurag K; Kaushal, Aradhana; Ménard, Cynthia; Pinto, Peter A; Camphausen, Kevin; Fichtinger, Gabor; Whitcomb, Louis L
An MRI-compatible robotic system with hybrid tracking for MRI-guided prostate intervention Journal Article
In: IEEE Transactions on Biomedical Engineering, vol. 58, iss. 11, pp. 3049-3060, 2011.
@article{fichtinger2011b,
title = {An MRI-compatible robotic system with hybrid tracking for MRI-guided prostate intervention},
author = {Axel Krieger and Iulian I Iordachita and Peter Guion and Anurag K Singh and Aradhana Kaushal and Cynthia Ménard and Peter A Pinto and Kevin Camphausen and Gabor Fichtinger and Louis L Whitcomb},
url = {https://ieeexplore.ieee.org/abstract/document/5740584/},
year = {2011},
date = {2011-01-01},
journal = {IEEE Transactions on Biomedical Engineering},
volume = {58},
issue = {11},
pages = {3049-3060},
publisher = {IEEE},
abstract = {This paper reports the development, evaluation, and first clinical trials of the access to the prostate tissue (APT) II system-a scanner independent system for magnetic resonance imaging (MRI)-guided transrectal prostate interventions. The system utilizes novel manipulator mechanics employing a steerable needle channel and a novel six degree-of-freedom hybrid tracking method, comprising passive fiducial tracking for initial registration and subsequent incremental motion measurements. Targeting accuracy of the system in prostate phantom experiments and two clinical human-subject procedures is shown to compare favorably with existing systems using passive and active tracking methods. The portable design of the APT II system, using only standard MRI image sequences and minimal custom scanner interfacing, allows the system to be easily used on different MRI scanners.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
This paper reports the development, evaluation, and first clinical trials of the access to the prostate tissue (APT) II system-a scanner independent system for magnetic resonance imaging (MRI)-guided transrectal prostate interventions. The system utilizes novel manipulator mechanics employing a steerable needle channel and a novel six degree-of-freedom hybrid tracking method, comprising passive fiducial tracking for initial registration and subsequent incremental motion measurements. Targeting accuracy of the system in prostate phantom experiments and two clinical human-subject procedures is shown to compare favorably with existing systems using passive and active tracking methods. The portable design of the APT II system, using only standard MRI image sequences and minimal custom scanner interfacing, allows the system to be easily used on different MRI scanners.
Yeo, Caitlin T; Ungi, Tamas; Paweena, U; Lasso, Andras; McGraw, Robert C; Fichtinger, Gabor
The effect of augmented reality training on percutaneous needle placement in spinal facet joint injections Journal Article
In: IEEE Transactions on Biomedical Engineering, vol. 58, iss. 7, pp. 2031-2037, 2011.
@article{fichtinger2011c,
title = {The effect of augmented reality training on percutaneous needle placement in spinal facet joint injections},
author = {Caitlin T Yeo and Tamas Ungi and U Paweena and Andras Lasso and Robert C McGraw and Gabor Fichtinger},
url = {https://ieeexplore.ieee.org/abstract/document/5739103/},
year = {2011},
date = {2011-01-01},
journal = {IEEE Transactions on Biomedical Engineering},
volume = {58},
issue = {7},
pages = {2031-2037},
publisher = {IEEE},
abstract = {The purpose of this study was to determine if augmented reality image overlay and laser guidance systems can assist medical trainees in learning the correct placement of a needle for percutaneous facet joint injection. The Perk Station training suite was used to conduct and record the needle insertion procedures. A total of 40 volunteers were randomized into two groups of 20. 1) The Overlay group received a training session that consisted of four insertions with image and laser guidance, followed by two insertions with laser overlay only. 2) The Control group received a training session of six classical freehand insertions. Both groups then conducted two freehand insertions. The movement of the needle was tracked during the series of insertions. The final insertion procedure was assessed to determine if there was a benefit to the overlay method compared to the freehand insertions. The Overlay group had a better …},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The purpose of this study was to determine if augmented reality image overlay and laser guidance systems can assist medical trainees in learning the correct placement of a needle for percutaneous facet joint injection. The Perk Station training suite was used to conduct and record the needle insertion procedures. A total of 40 volunteers were randomized into two groups of 20. 1) The Overlay group received a training session that consisted of four insertions with image and laser guidance, followed by two insertions with laser overlay only. 2) The Control group received a training session of six classical freehand insertions. Both groups then conducted two freehand insertions. The movement of the needle was tracked during the series of insertions. The final insertion procedure was assessed to determine if there was a benefit to the overlay method compared to the freehand insertions. The Overlay group had a better …
Ultrasound calibration and real-time quality assurance based on closed form formulation Journal Article
In: 2011.
@article{fichtinger2011d,
title = {Ultrasound calibration and real-time quality assurance based on closed form formulation},
url = {https://patents.google.com/patent/US7867167B2/en},
year = {2011},
date = {2011-01-01},
abstract = {Disclosed is a system and method for intra-operatively spatially calibrating an ultrasound probe. The method includes determining the relative changes in ultrasound images of a phantom, or high-contrast feature points within a target volume, for three different ultrasound positions. Spatially calibrating the ultrasound probe includes measuring the change in position and orientation of the probe and computing a calibration matrix based on the measured changes in probe position and orientation and the estimated changes in position and orientation of the phantom.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Disclosed is a system and method for intra-operatively spatially calibrating an ultrasound probe. The method includes determining the relative changes in ultrasound images of a phantom, or high-contrast feature points within a target volume, for three different ultrasound positions. Spatially calibrating the ultrasound probe includes measuring the change in position and orientation of the probe and computing a calibration matrix based on the measured changes in probe position and orientation and the estimated changes in position and orientation of the phantom.
Song, Danny Y; Burdette, Everette C; Fiene, Jonathan; Armour, Elwood; Kronreif, Gernot; Deguet, Anton; Zhang, Zhe; Iordachita, Iulian; Fichtinger, Gabor; Kazanzides, Peter
Robotic needle guide for prostate brachytherapy: clinical testing of feasibility and performance Journal Article
In: Brachytherapy, vol. 10, iss. 1, pp. 57-63, 2011.
@article{fichtinger2011e,
title = {Robotic needle guide for prostate brachytherapy: clinical testing of feasibility and performance},
author = {Danny Y Song and Everette C Burdette and Jonathan Fiene and Elwood Armour and Gernot Kronreif and Anton Deguet and Zhe Zhang and Iulian Iordachita and Gabor Fichtinger and Peter Kazanzides},
url = {https://www.sciencedirect.com/science/article/pii/S1538472110002448},
year = {2011},
date = {2011-01-01},
journal = {Brachytherapy},
volume = {10},
issue = {1},
pages = {57-63},
publisher = {Elsevier},
abstract = {PURPOSE
Optimization of prostate brachytherapy is constrained by tissue deflection of needles and fixed spacing of template holes. We developed and clinically tested a robotic guide toward the goal of allowing greater freedom of needle placement.
METHODS AND MATERIALS
The robot consists of a small tubular needle guide attached to a robotically controlled arm. The apparatus is mounted and calibrated to operate in the same coordinate frame as a standard template. Translation in x and y directions over the perineum ±40mm are possible. Needle insertion is performed manually.
RESULTS
Five patients were treated in an institutional review board-approved study. Confirmatory measurements of robotic movements for initial 3 patients using infrared tracking showed mean error of 0.489mm (standard deviation, 0.328mm). Fine adjustments in needle positioning were possible when tissue deflection was …},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
PURPOSE
Optimization of prostate brachytherapy is constrained by tissue deflection of needles and fixed spacing of template holes. We developed and clinically tested a robotic guide toward the goal of allowing greater freedom of needle placement.
METHODS AND MATERIALS
The robot consists of a small tubular needle guide attached to a robotically controlled arm. The apparatus is mounted and calibrated to operate in the same coordinate frame as a standard template. Translation in x and y directions over the perineum ±40mm are possible. Needle insertion is performed manually.
RESULTS
Five patients were treated in an institutional review board-approved study. Confirmatory measurements of robotic movements for initial 3 patients using infrared tracking showed mean error of 0.489mm (standard deviation, 0.328mm). Fine adjustments in needle positioning were possible when tissue deflection was …
Optimization of prostate brachytherapy is constrained by tissue deflection of needles and fixed spacing of template holes. We developed and clinically tested a robotic guide toward the goal of allowing greater freedom of needle placement.
METHODS AND MATERIALS
The robot consists of a small tubular needle guide attached to a robotically controlled arm. The apparatus is mounted and calibrated to operate in the same coordinate frame as a standard template. Translation in x and y directions over the perineum ±40mm are possible. Needle insertion is performed manually.
RESULTS
Five patients were treated in an institutional review board-approved study. Confirmatory measurements of robotic movements for initial 3 patients using infrared tracking showed mean error of 0.489mm (standard deviation, 0.328mm). Fine adjustments in needle positioning were possible when tissue deflection was …
Robotic 5-dimensional ultrasound Journal Article
In: 2011.
@article{fichtinger2011f,
title = {Robotic 5-dimensional ultrasound},
url = {https://patents.google.com/patent/US7901357B2/en},
year = {2011},
date = {2011-01-01},
abstract = {A robotic 5D ultrasound system and method, for use in a computer integrated surgical system, wherein 3D ultrasonic image data is integrated over time with strain (ie, elasticity) image data. By integrating the ultrasound image data and the strain image data, the present invention is capable of accurately identifying a target tissue in surrounding tissue; segmenting, monitoring and tracking the target tissue during the surgical procedure; and facilitating proper planning and execution of the surgical procedure, even where the surgical environment is noisy and the target tissue is isoechoic.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
A robotic 5D ultrasound system and method, for use in a computer integrated surgical system, wherein 3D ultrasonic image data is integrated over time with strain (ie, elasticity) image data. By integrating the ultrasound image data and the strain image data, the present invention is capable of accurately identifying a target tissue in surrounding tissue; segmenting, monitoring and tracking the target tissue during the surgical procedure; and facilitating proper planning and execution of the surgical procedure, even where the surgical environment is noisy and the target tissue is isoechoic.
Weiss, Clifford R; Marker, David R; Fischer, Gregory S; Fichtinger, Gabor; Machado, Antonio J; Carrino, John A
In: American Journal of Roentgenology, vol. 196, iss. 3, pp. W305-W307, 2011.
@article{fichtinger2011g,
title = {Augmented reality visualization using Image-Overlay for MR-guided interventions: system description, feasibility, and initial evaluation in a spine phantom},
author = {Clifford R Weiss and David R Marker and Gregory S Fischer and Gabor Fichtinger and Antonio J Machado and John A Carrino},
url = {https://ajronline.org/doi/abs/10.2214/AJR.10.5038},
year = {2011},
date = {2011-01-01},
journal = {American Journal of Roentgenology},
volume = {196},
issue = {3},
pages = {W305-W307},
publisher = {American Roentgen Ray Society},
abstract = {OBJECTIVE. The purpose of this article is to provide a preliminary user assessment of Image-Overlay, an augmented reality system for MRI-guided needle placement, in a spine phantom.
CONCLUSION. Image-Overlay can be used to successfully target lumbar facet joints with high accuracy and minimal insertions. This is potentially useful for other interventional MRI applications. Additional clinical assessment is needed.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
OBJECTIVE. The purpose of this article is to provide a preliminary user assessment of Image-Overlay, an augmented reality system for MRI-guided needle placement, in a spine phantom.
CONCLUSION. Image-Overlay can be used to successfully target lumbar facet joints with high accuracy and minimal insertions. This is potentially useful for other interventional MRI applications. Additional clinical assessment is needed.
CONCLUSION. Image-Overlay can be used to successfully target lumbar facet joints with high accuracy and minimal insertions. This is potentially useful for other interventional MRI applications. Additional clinical assessment is needed.
Robotic 5-dimensional ultrasound Journal Article
In: 2011.
@article{fichtinger2011h,
title = {Robotic 5-dimensional ultrasound},
url = {https://patents.google.com/patent/US20110237947A1/en},
year = {2011},
date = {2011-01-01},
abstract = {A robotic 5D ultrasound system and method, for use in a computer integrated surgical system, wherein 3D ultrasonic image data is integrated over time with strain (ie, elasticity) image data. By integrating the ultrasound image data and the strain image data, the present invention is capable of accurately identifying a target tissue in surrounding tissue; segmenting, monitoring and tracking the target tissue during the surgical procedure; and facilitating proper planning and execution of the surgical procedure, even where the surgical environment is noisy and the target tissue is isoechoic.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
A robotic 5D ultrasound system and method, for use in a computer integrated surgical system, wherein 3D ultrasonic image data is integrated over time with strain (ie, elasticity) image data. By integrating the ultrasound image data and the strain image data, the present invention is capable of accurately identifying a target tissue in surrounding tissue; segmenting, monitoring and tracking the target tissue during the surgical procedure; and facilitating proper planning and execution of the surgical procedure, even where the surgical environment is noisy and the target tissue is isoechoic.
Tadayyon, Hadi; Lasso, Andras; Kaushal, Aradhana; Guion, Peter; Fichtinger, Gabor
Target motion tracking in MRI-guided transrectal robotic prostate biopsy Journal Article
In: IEEE transactions on biomedical engineering, vol. 58, iss. 11, pp. 3135-3142, 2011.
@article{fichtinger2011i,
title = {Target motion tracking in MRI-guided transrectal robotic prostate biopsy},
author = {Hadi Tadayyon and Andras Lasso and Aradhana Kaushal and Peter Guion and Gabor Fichtinger},
url = {https://ieeexplore.ieee.org/abstract/document/5975205/},
year = {2011},
date = {2011-01-01},
journal = {IEEE transactions on biomedical engineering},
volume = {58},
issue = {11},
pages = {3135-3142},
publisher = {IEEE},
abstract = {Purpose
MRI-guided prostate needle biopsy requires compensation for organ motion between target planning and needle placement. Two questions are studied and answered in this paper: 1) is rigid registration sufficient in tracking the targets with an error smaller than the clinically significant size of prostate cancer and 2) what is the effect of the number of intraoperative slices on registration accuracy and speed?
Methods
we propose multislice-to-volume registration algorithms for tracking the biopsy targets within the prostate. Three orthogonal plus additional transverse intraoperative slices are acquired in the approximate center of the prostate and registered with a high-resolution target planning volume. Both rigid and deformable scenarios were implemented. Both simulated and clinical MRI-guided robotic prostate biopsy data were used to assess tracking accuracy.
Results
average registration errors in clinical …},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Purpose
MRI-guided prostate needle biopsy requires compensation for organ motion between target planning and needle placement. Two questions are studied and answered in this paper: 1) is rigid registration sufficient in tracking the targets with an error smaller than the clinically significant size of prostate cancer and 2) what is the effect of the number of intraoperative slices on registration accuracy and speed?
Methods
we propose multislice-to-volume registration algorithms for tracking the biopsy targets within the prostate. Three orthogonal plus additional transverse intraoperative slices are acquired in the approximate center of the prostate and registered with a high-resolution target planning volume. Both rigid and deformable scenarios were implemented. Both simulated and clinical MRI-guided robotic prostate biopsy data were used to assess tracking accuracy.
Results
average registration errors in clinical …
MRI-guided prostate needle biopsy requires compensation for organ motion between target planning and needle placement. Two questions are studied and answered in this paper: 1) is rigid registration sufficient in tracking the targets with an error smaller than the clinically significant size of prostate cancer and 2) what is the effect of the number of intraoperative slices on registration accuracy and speed?
Methods
we propose multislice-to-volume registration algorithms for tracking the biopsy targets within the prostate. Three orthogonal plus additional transverse intraoperative slices are acquired in the approximate center of the prostate and registered with a high-resolution target planning volume. Both rigid and deformable scenarios were implemented. Both simulated and clinical MRI-guided robotic prostate biopsy data were used to assess tracking accuracy.
Results
average registration errors in clinical …
Dehghan, Ehsan; Jain, Ameet K; Moradi, Mehdi; Wen, Xu; Morris, W James; Salcudean, Septimiu E; Fichtinger, Gabor
Brachytherapy seed reconstruction with joint-encoded C-arm single-axis rotation and motion compensation Journal Article
In: Medical image analysis, vol. 15, iss. 5, pp. 760-771, 2011.
@article{fichtinger2011j,
title = {Brachytherapy seed reconstruction with joint-encoded C-arm single-axis rotation and motion compensation},
author = {Ehsan Dehghan and Ameet K Jain and Mehdi Moradi and Xu Wen and W James Morris and Septimiu E Salcudean and Gabor Fichtinger},
url = {https://www.sciencedirect.com/science/article/pii/S1361841511000855},
year = {2011},
date = {2011-01-01},
journal = {Medical image analysis},
volume = {15},
issue = {5},
pages = {760-771},
publisher = {Elsevier},
abstract = {C-arm fluoroscopy images are frequently used for qualitative assessment of prostate brachytherapy. Three-dimensional seed reconstruction from C-arm images is necessary for intraoperative dosimetry and quantitative assessment. Seed reconstruction requires accurately known C-arm poses. We propose to measure the C-arm rotation angles and computationally compensate for inevitable C-arm motion to compute the pose. We compensate the translational motions of a C-arm, such as oscillation, sagging and wheel motion using a three-level optimization algorithm and obviate the need for full pose tracking using external trackers or fiducials. We validated our approach on simulated and 100 clinical data sets from 10 patients and gained on average, a seed matching rate of 98.5%, projection error of 0.33mm (STD=0.21mm) and computation time of 19.8s per patient, which must be considered as clinically excellent …},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
C-arm fluoroscopy images are frequently used for qualitative assessment of prostate brachytherapy. Three-dimensional seed reconstruction from C-arm images is necessary for intraoperative dosimetry and quantitative assessment. Seed reconstruction requires accurately known C-arm poses. We propose to measure the C-arm rotation angles and computationally compensate for inevitable C-arm motion to compute the pose. We compensate the translational motions of a C-arm, such as oscillation, sagging and wheel motion using a three-level optimization algorithm and obviate the need for full pose tracking using external trackers or fiducials. We validated our approach on simulated and 100 clinical data sets from 10 patients and gained on average, a seed matching rate of 98.5%, projection error of 0.33mm (STD=0.21mm) and computation time of 19.8s per patient, which must be considered as clinically excellent …
Fichtinger, Gabor; Martel, Anne; Peters, Terry
In: vol. 6893, 2011.
@article{fichtinger2011k,
title = {Medical Image Computing and Computer-Assisted Intervention-MICCAI 2011: 14th International Conference, Toronto, Canada, September 18-22, 2011, Proceedings, Part III},
author = {Gabor Fichtinger and Anne Martel and Terry Peters},
url = {https://books.google.com/books?hl=en&lr=&id=0oS9BAAAQBAJ&oi=fnd&pg=PR3&dq=info:53afo-9BtSYJ:scholar.google.com&ots=xHhhPLgiuP&sig=lJe2zdGC8PmrIW9bXZ_a-0BqGFg},
year = {2011},
date = {2011-01-01},
volume = {6893},
publisher = {Springer},
abstract = {The three-volume set LNCS 6891, 6892 and 6893 constitutes the refereed proceedings of the 14th International Conference on Medical Image Computing and Computer-Assisted Intervention, MICCAI 2011, held in Toronto, Canada, in September 2011. Based on rigorous peer reviews, the program committee carefully selected 251 revised papers from 819 submissions for presentation in three volumes. The third volume includes 82 papers organized in topical sections on computer-aided diagnosis and machine learning, and segmentation.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The three-volume set LNCS 6891, 6892 and 6893 constitutes the refereed proceedings of the 14th International Conference on Medical Image Computing and Computer-Assisted Intervention, MICCAI 2011, held in Toronto, Canada, in September 2011. Based on rigorous peer reviews, the program committee carefully selected 251 revised papers from 819 submissions for presentation in three volumes. The third volume includes 82 papers organized in topical sections on computer-aided diagnosis and machine learning, and segmentation.
Lobo, Julio R; Moradi, Mehdi; Chng, Nick; Dehghan, Ehsan; Morris, William J; Fichtinger, Gabor; Salcudean, Septimiu E
Use of needle track detection to quantify the displacement of stranded seeds following prostate brachytherapy Journal Article
In: IEEE Transactions on Medical Imaging, vol. 31, iss. 3, pp. 738-748, 2011.
@article{fichtinger2011l,
title = {Use of needle track detection to quantify the displacement of stranded seeds following prostate brachytherapy},
author = {Julio R Lobo and Mehdi Moradi and Nick Chng and Ehsan Dehghan and William J Morris and Gabor Fichtinger and Septimiu E Salcudean},
url = {https://ieeexplore.ieee.org/abstract/document/6095633/},
year = {2011},
date = {2011-01-01},
journal = {IEEE Transactions on Medical Imaging},
volume = {31},
issue = {3},
pages = {738-748},
publisher = {IEEE},
abstract = {We aim to compute the movement of permanent stranded implant brachytherapy radioactive sources (seeds) in the prostate from the planned seed distribution to the intraoperative fluoroscopic distribution, and then to the postimplant computed tomography (CT) distribution. We present a novel approach to matching the seeds in these distributions to the plan by grouping the seeds into needle tracks. First, we identify the implantation axis using a sample consensus algorithm. Then, we use a network flow algorithm to group seeds into their needle tracks. Finally, we match the needles from the three stages using both their transverse plane location and the number of seeds per needle. We validated our approach on eight clinical prostate brachytherapy cases, having a total of 871 brachytherapy seeds distributed in 193 needles. For the intraoperative and postimplant data, 99.31% and 99.41% of the seeds were correctly …},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
We aim to compute the movement of permanent stranded implant brachytherapy radioactive sources (seeds) in the prostate from the planned seed distribution to the intraoperative fluoroscopic distribution, and then to the postimplant computed tomography (CT) distribution. We present a novel approach to matching the seeds in these distributions to the plan by grouping the seeds into needle tracks. First, we identify the implantation axis using a sample consensus algorithm. Then, we use a network flow algorithm to group seeds into their needle tracks. Finally, we match the needles from the three stages using both their transverse plane location and the number of seeds per needle. We validated our approach on eight clinical prostate brachytherapy cases, having a total of 871 brachytherapy seeds distributed in 193 needles. For the intraoperative and postimplant data, 99.31% and 99.41% of the seeds were correctly …
Song, Danny Y; Jain, Ameet K; Zhang, Zhe; Deguet, Anton; Le, Yi; Armour, Elwood; Burdette, E Clif; Fichtinger, Gabor
Dynamic intraoperative dosimetry for prostate brachytherapy using a nonisocentric C-arm Journal Article
In: Brachytherapy, vol. 10, iss. 2, pp. 98-106, 2011.
@article{fichtinger2011m,
title = {Dynamic intraoperative dosimetry for prostate brachytherapy using a nonisocentric C-arm},
author = {Danny Y Song and Ameet K Jain and Zhe Zhang and Anton Deguet and Yi Le and Elwood Armour and E Clif Burdette and Gabor Fichtinger},
url = {https://www.sciencedirect.com/science/article/pii/S1538472110002497},
year = {2011},
date = {2011-01-01},
journal = {Brachytherapy},
volume = {10},
issue = {2},
pages = {98-106},
publisher = {Elsevier},
abstract = {PURPOSE
To evaluate a prototypical system of dynamic intraoperative dosimetry for prostate brachytherapy using registered ultrasound and fluoroscopy (RUF) with a nonisocentric C-arm (GE OEC, Salt Lake City, UT) and to compare intraoperative dosimetry of RUF as well as ultrasound-based seed localization (USD) with Day 0 CT dosimetry.
METHODS
Seed positions were independently determined using RUF and USD. RUF uses a radio-opaque fiducial for registration to ultrasound and 3-dimensional reconstruction of seeds relative to prostate using nonisocentric C-arm fluoroscopy. Postimplant CT was performed on Day 0. Squared differences between dosimetric measures for RUF vs. CT and USD vs. CT were calculated and mean squared differences evaluated. Paired t test was used to evaluate which method was more closely aligned with CT. Accuracies of USD and RUF compared with CT were estimated …},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
PURPOSE
To evaluate a prototypical system of dynamic intraoperative dosimetry for prostate brachytherapy using registered ultrasound and fluoroscopy (RUF) with a nonisocentric C-arm (GE OEC, Salt Lake City, UT) and to compare intraoperative dosimetry of RUF as well as ultrasound-based seed localization (USD) with Day 0 CT dosimetry.
METHODS
Seed positions were independently determined using RUF and USD. RUF uses a radio-opaque fiducial for registration to ultrasound and 3-dimensional reconstruction of seeds relative to prostate using nonisocentric C-arm fluoroscopy. Postimplant CT was performed on Day 0. Squared differences between dosimetric measures for RUF vs. CT and USD vs. CT were calculated and mean squared differences evaluated. Paired t test was used to evaluate which method was more closely aligned with CT. Accuracies of USD and RUF compared with CT were estimated …
To evaluate a prototypical system of dynamic intraoperative dosimetry for prostate brachytherapy using registered ultrasound and fluoroscopy (RUF) with a nonisocentric C-arm (GE OEC, Salt Lake City, UT) and to compare intraoperative dosimetry of RUF as well as ultrasound-based seed localization (USD) with Day 0 CT dosimetry.
METHODS
Seed positions were independently determined using RUF and USD. RUF uses a radio-opaque fiducial for registration to ultrasound and 3-dimensional reconstruction of seeds relative to prostate using nonisocentric C-arm fluoroscopy. Postimplant CT was performed on Day 0. Squared differences between dosimetric measures for RUF vs. CT and USD vs. CT were calculated and mean squared differences evaluated. Paired t test was used to evaluate which method was more closely aligned with CT. Accuracies of USD and RUF compared with CT were estimated …
Ungi, Tamas; Yeo, Caitlin T; Paweena, U; McGraw, Robert C; Fichtinger, Gabor
Augmented reality needle guidance improves facet joint injection training Journal Article
In: vol. 7964, pp. 718-724, 2011.
@article{fichtinger2011n,
title = {Augmented reality needle guidance improves facet joint injection training},
author = {Tamas Ungi and Caitlin T Yeo and U Paweena and Robert C McGraw and Gabor Fichtinger},
url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/7964/79642E/Augmented-reality-needle-guidance-improvesfacet-joint-injection-training/10.1117/12.877830.short},
year = {2011},
date = {2011-01-01},
volume = {7964},
pages = {718-724},
publisher = {SPIE},
abstract = {PURPOSE
The purpose of this study was to determine if medical trainees would benefit from augmented reality image overlay and laser guidance in learning how to set the correct orientation of a needle for percutaneous facet joint injection.
METHODS
A total of 28 medical students were randomized into two groups: (1) The Overlay group received a training session of four insertions with image and laser guidance followed by two insertions with laser overlay only; (2) The Control group was trained by carrying out six freehand insertions. After the training session, needle trajectories of two facet joint injections without any guidance were recorded by an electromagnetic tracker and were analyzed. Number of successful needle placements, distance covered by needle tip inside the phantom and procedural time were measured to evaluate performance.
RESULTS
Number of successful placements was significantly …},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
PURPOSE
The purpose of this study was to determine if medical trainees would benefit from augmented reality image overlay and laser guidance in learning how to set the correct orientation of a needle for percutaneous facet joint injection.
METHODS
A total of 28 medical students were randomized into two groups: (1) The Overlay group received a training session of four insertions with image and laser guidance followed by two insertions with laser overlay only; (2) The Control group was trained by carrying out six freehand insertions. After the training session, needle trajectories of two facet joint injections without any guidance were recorded by an electromagnetic tracker and were analyzed. Number of successful needle placements, distance covered by needle tip inside the phantom and procedural time were measured to evaluate performance.
RESULTS
Number of successful placements was significantly …
The purpose of this study was to determine if medical trainees would benefit from augmented reality image overlay and laser guidance in learning how to set the correct orientation of a needle for percutaneous facet joint injection.
METHODS
A total of 28 medical students were randomized into two groups: (1) The Overlay group received a training session of four insertions with image and laser guidance followed by two insertions with laser overlay only; (2) The Control group was trained by carrying out six freehand insertions. After the training session, needle trajectories of two facet joint injections without any guidance were recorded by an electromagnetic tracker and were analyzed. Number of successful needle placements, distance covered by needle tip inside the phantom and procedural time were measured to evaluate performance.
RESULTS
Number of successful placements was significantly …
Khallaghi, Siavash; Mousavi, Parvin; Borschneck, Dan; Fichtinger, Gabor; Abolmaesumi, Purang
Biomechanically constrained groupwise statistical shape model to ultrasound registration of the lumbar spine Journal Article
In: pp. 47-54, 2011.
@article{fichtinger2011o,
title = {Biomechanically constrained groupwise statistical shape model to ultrasound registration of the lumbar spine},
author = {Siavash Khallaghi and Parvin Mousavi and Dan Borschneck and Gabor Fichtinger and Purang Abolmaesumi},
url = {https://link.springer.com/chapter/10.1007/978-3-642-21504-9_5},
year = {2011},
date = {2011-01-01},
pages = {47-54},
publisher = {Springer Berlin Heidelberg},
abstract = {Spinal needle injections for back pain management are frequently carried out in hospitals and radiological clinics. Currently, these procedures are performed under fluoroscopy or CT guidance in specialized interventional radiology facilities. As an alternative, the use of inexpensive ultrasound image guidance promises to reduce the costs and increase the availability and safety of procedure. We propose to eliminate the need for ionizing radiation by creating a statistical shape model of the lumbar vertebrae and registering it to 3D ultrasound volumes of patient using a groupwise registration algorithm. From a total of 35 patient CT volumes, statistical shape models of the L2, L3 and L4 vertebrae are created, including the mean shapes and principal modes of variation. The statistical shape models are simultaneously registered to the 3D ultrasound by interchangeably optimizing the model parameters and their …},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Spinal needle injections for back pain management are frequently carried out in hospitals and radiological clinics. Currently, these procedures are performed under fluoroscopy or CT guidance in specialized interventional radiology facilities. As an alternative, the use of inexpensive ultrasound image guidance promises to reduce the costs and increase the availability and safety of procedure. We propose to eliminate the need for ionizing radiation by creating a statistical shape model of the lumbar vertebrae and registering it to 3D ultrasound volumes of patient using a groupwise registration algorithm. From a total of 35 patient CT volumes, statistical shape models of the L2, L3 and L4 vertebrae are created, including the mean shapes and principal modes of variation. The statistical shape models are simultaneously registered to the 3D ultrasound by interchangeably optimizing the model parameters and their …
Peikari, Mohammad; Chen, Thomas Kuiran; Lasso, Andras; Heffter, Tamas; Fichtinger, Gabor
Effects of ultrasound section-thickness on brachytherapy needle tip localization error Journal Article
In: pp. 299-306, 2011.
@article{fichtinger2011p,
title = {Effects of ultrasound section-thickness on brachytherapy needle tip localization error},
author = {Mohammad Peikari and Thomas Kuiran Chen and Andras Lasso and Tamas Heffter and Gabor Fichtinger},
url = {https://link.springer.com/chapter/10.1007/978-3-642-23623-5_38},
year = {2011},
date = {2011-01-01},
pages = {299-306},
publisher = {Springer Berlin Heidelberg},
abstract = {Purpose: Ultrasound section-thickness is the out-of-plane beamwidth causing major roles in creating image artifacts normally appearing around the anechoic areas. These artifacts can introduce errors in localizing the needle tips during any ultrasound-guided procedure. To study how section-thickness and imaging parameters can affect observing and localizing needle tips, we have conducted a typical calibration setup experiment. Method: Multiple needles were inserted orthogonal to the axial image plane, at various distances from the transducer. The experiment was conducted on a brachytherapy stepper for a curvilinear transrectal-ultrasound probe. Result: Experiments demonstrated that the imaging parameters have direct impacts on observing needle tips at different axial locations. They suggest specific settings to minimize the imaging artifacts. Conclusion: The ultrasound section-thickness …},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Purpose: Ultrasound section-thickness is the out-of-plane beamwidth causing major roles in creating image artifacts normally appearing around the anechoic areas. These artifacts can introduce errors in localizing the needle tips during any ultrasound-guided procedure. To study how section-thickness and imaging parameters can affect observing and localizing needle tips, we have conducted a typical calibration setup experiment. Method: Multiple needles were inserted orthogonal to the axial image plane, at various distances from the transducer. The experiment was conducted on a brachytherapy stepper for a curvilinear transrectal-ultrasound probe. Result: Experiments demonstrated that the imaging parameters have direct impacts on observing needle tips at different axial locations. They suggest specific settings to minimize the imaging artifacts. Conclusion: The ultrasound section-thickness …
Chen, Thomas Kuiran; Heffter, Tamas; Lasso, Andras; Pinter, Csaba; Abolmaesumi, Purang; Burdette, E Clif; Fichtinger, Gabor
Automated intraoperative calibration for prostate cancer brachytherapy Journal Article
In: Medical physics, vol. 38, iss. 11, pp. 6285-6299, 2011.
@article{fichtinger2011q,
title = {Automated intraoperative calibration for prostate cancer brachytherapy},
author = {Thomas Kuiran Chen and Tamas Heffter and Andras Lasso and Csaba Pinter and Purang Abolmaesumi and E Clif Burdette and Gabor Fichtinger},
url = {https://aapm.onlinelibrary.wiley.com/doi/abs/10.1118/1.3651690},
year = {2011},
date = {2011-01-01},
journal = {Medical physics},
volume = {38},
issue = {11},
pages = {6285-6299},
publisher = {American Association of Physicists in Medicine},
abstract = {Purpose:
Prostate cancer brachytherapy relies on an accurate spatial registration between the implant needles and the TRUS image, called “calibration”. The authors propose a new device and a fast, automatic method to calibrate the brachytherapy system in the operating room, with instant error feedback.
Methods:
A device was CAD‐designed and precision‐engineered, which mechanically couples a calibration phantom with an exact replica of the standard brachytherapy template. From real‐time TRUS images acquired from the calibration device and processed by the calibration system, the coordinate transformation between the brachytherapy template and the TRUS images was computed automatically. The system instantly generated a report of the target reconstruction accuracy based on the current calibration outcome.
Results:
Four types of validation tests were conducted. First, 50 independent, real‐time …},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Purpose:
Prostate cancer brachytherapy relies on an accurate spatial registration between the implant needles and the TRUS image, called “calibration”. The authors propose a new device and a fast, automatic method to calibrate the brachytherapy system in the operating room, with instant error feedback.
Methods:
A device was CAD‐designed and precision‐engineered, which mechanically couples a calibration phantom with an exact replica of the standard brachytherapy template. From real‐time TRUS images acquired from the calibration device and processed by the calibration system, the coordinate transformation between the brachytherapy template and the TRUS images was computed automatically. The system instantly generated a report of the target reconstruction accuracy based on the current calibration outcome.
Results:
Four types of validation tests were conducted. First, 50 independent, real‐time …
Prostate cancer brachytherapy relies on an accurate spatial registration between the implant needles and the TRUS image, called “calibration”. The authors propose a new device and a fast, automatic method to calibrate the brachytherapy system in the operating room, with instant error feedback.
Methods:
A device was CAD‐designed and precision‐engineered, which mechanically couples a calibration phantom with an exact replica of the standard brachytherapy template. From real‐time TRUS images acquired from the calibration device and processed by the calibration system, the coordinate transformation between the brachytherapy template and the TRUS images was computed automatically. The system instantly generated a report of the target reconstruction accuracy based on the current calibration outcome.
Results:
Four types of validation tests were conducted. First, 50 independent, real‐time …
Fallavollita, P; Burdette, EC; Song, DY; Abolmaesumi, P; Fichtinger, G
Unsupervised C‐arm pose tracking with radiographic fiducial Journal Article
In: Medical physics, vol. 38, iss. 4, pp. 2241-2245, 2011.
@article{fichtinger2011r,
title = {Unsupervised C‐arm pose tracking with radiographic fiducial},
author = {P Fallavollita and EC Burdette and DY Song and P Abolmaesumi and G Fichtinger},
url = {https://aapm.onlinelibrary.wiley.com/doi/abs/10.1118/1.3566015},
year = {2011},
date = {2011-01-01},
journal = {Medical physics},
volume = {38},
issue = {4},
pages = {2241-2245},
publisher = {American Association of Physicists in Medicine},
abstract = {Purpose:
C‐arm fluoroscopy reconstruction, such as that used in prostate brachytherapy, requires that the relative poses of the individual C‐arm fluoroscopy images must be known prior to reconstruction. Radiographic fiducials can provide excellent C‐arm pose tracking, but they need to be segmented in the image. The authors report an automated and unsupervised method that does not require prior segmentation of the fiducial.
Methods:
The authors compute the individual C‐arm poses relative to a stationary radiographic fiducial of known geometry. The authors register a filtered 2D fluoroscopy image of the fiducial to its 3D model by using image intensity alone without prior segmentation. To enhance the C‐arm images, the authors investigated a three‐step cascade filter and a line enhancement filter. The authors tested the method on a composite fiducial containing beads, straight lines, and ellipses. Ground …},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Purpose:
C‐arm fluoroscopy reconstruction, such as that used in prostate brachytherapy, requires that the relative poses of the individual C‐arm fluoroscopy images must be known prior to reconstruction. Radiographic fiducials can provide excellent C‐arm pose tracking, but they need to be segmented in the image. The authors report an automated and unsupervised method that does not require prior segmentation of the fiducial.
Methods:
The authors compute the individual C‐arm poses relative to a stationary radiographic fiducial of known geometry. The authors register a filtered 2D fluoroscopy image of the fiducial to its 3D model by using image intensity alone without prior segmentation. To enhance the C‐arm images, the authors investigated a three‐step cascade filter and a line enhancement filter. The authors tested the method on a composite fiducial containing beads, straight lines, and ellipses. Ground …
C‐arm fluoroscopy reconstruction, such as that used in prostate brachytherapy, requires that the relative poses of the individual C‐arm fluoroscopy images must be known prior to reconstruction. Radiographic fiducials can provide excellent C‐arm pose tracking, but they need to be segmented in the image. The authors report an automated and unsupervised method that does not require prior segmentation of the fiducial.
Methods:
The authors compute the individual C‐arm poses relative to a stationary radiographic fiducial of known geometry. The authors register a filtered 2D fluoroscopy image of the fiducial to its 3D model by using image intensity alone without prior segmentation. To enhance the C‐arm images, the authors investigated a three‐step cascade filter and a line enhancement filter. The authors tested the method on a composite fiducial containing beads, straight lines, and ellipses. Ground …