Reza Tabanfar
Graduate student (Masters)
Surgery
Queen's University
Vinith is an undergraduate in the biomedical program, looking to graduate in 2019.
Yan, Christina; Tabanfar, Reza; Kempston, Michael; Borschneck, Daniel P.; Ungi, Tamas; Fichtinger, Gabor
Comparison of portable and conventional ultrasound imaging in spinal curvature measurement Conference
SPIE Medical Imaging, SPIE Medical Imaging 2016 SPIE Medical Imaging 2016, San Diego, CA, United States., 2016.
@conference{Yan2016a,
title = {Comparison of portable and conventional ultrasound imaging in spinal curvature measurement},
author = {Christina Yan and Reza Tabanfar and Michael Kempston and Daniel P. Borschneck and Tamas Ungi and Gabor Fichtinger},
url = {https://labs.cs.queensu.ca/perklab/wp-content/uploads/sites/3/2024/02/Yan2016a_1.pdf},
year = {2016},
date = {2016-01-01},
urldate = {2016-01-01},
booktitle = {SPIE Medical Imaging},
publisher = {SPIE Medical Imaging 2016},
address = {San Diego, CA, United States.},
organization = {SPIE Medical Imaging 2016},
abstract = {<p>PURPOSE: In scoliosis monitoring, tracked ultrasound has been explored as a safer imaging alternative to traditional radiography. The use of ultrasound in spinal curvature measurement requires identification of vertebral landmarks, but bones have reduced visibility in ultrasound imaging and high quality ultrasound machines are often expensive and not portable. In this work, we investigate the image quality and measurement accuracy of a low cost and portable ultrasound machine in comparison to a standard ultrasound machine in scoliosis monitoring. </p>
<p> <br />
METHODS: Two different kinds of ultrasound machines were tested on three human subjects, using the same position tracker and software. Spinal curves were measured in the same reference coordinate system using both ultrasound machines. Lines were defined by connecting two symmetric landmarks identified on the left and right transverse process of the same vertebrae, and spinal curvature was defined as the transverse process angle between two such lines, projected on the coronal plane. </p>
<p>RESULTS: Three healthy volunteers were scanned by both ultrasound configurations. Three experienced observers localized transverse processes as skeletal landmarks and obtained transverse process angles in images obtained from both ultrasounds. The mean difference per transverse process angle measured was 3.00 ± 2.1°. 94% of transverse processes visualized in the Sonix Touch were also visible in the Telemed. Inter-observer error in the Telemed was 4.5° and 4.3° in the Sonix Touch. </p>
<p>CONCLUSION: Price, convenience and accessibility suggest the Telemed to be a viable alternative in scoliosis monitoring, however further improvements in measurement protocol and image noise reduction must be completed before implementing the Telemed in the clinical setting. </p>},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
<p>PURPOSE: In scoliosis monitoring, tracked ultrasound has been explored as a safer imaging alternative to traditional radiography. The use of ultrasound in spinal curvature measurement requires identification of vertebral landmarks, but bones have reduced visibility in ultrasound imaging and high quality ultrasound machines are often expensive and not portable. In this work, we investigate the image quality and measurement accuracy of a low cost and portable ultrasound machine in comparison to a standard ultrasound machine in scoliosis monitoring. </p>
<p> <br />
METHODS: Two different kinds of ultrasound machines were tested on three human subjects, using the same position tracker and software. Spinal curves were measured in the same reference coordinate system using both ultrasound machines. Lines were defined by connecting two symmetric landmarks identified on the left and right transverse process of the same vertebrae, and spinal curvature was defined as the transverse process angle between two such lines, projected on the coronal plane. </p>
<p>RESULTS: Three healthy volunteers were scanned by both ultrasound configurations. Three experienced observers localized transverse processes as skeletal landmarks and obtained transverse process angles in images obtained from both ultrasounds. The mean difference per transverse process angle measured was 3.00 ± 2.1°. 94% of transverse processes visualized in the Sonix Touch were also visible in the Telemed. Inter-observer error in the Telemed was 4.5° and 4.3° in the Sonix Touch. </p>
<p>CONCLUSION: Price, convenience and accessibility suggest the Telemed to be a viable alternative in scoliosis monitoring, however further improvements in measurement protocol and image noise reduction must be completed before implementing the Telemed in the clinical setting. </p>
<p> <br />
METHODS: Two different kinds of ultrasound machines were tested on three human subjects, using the same position tracker and software. Spinal curves were measured in the same reference coordinate system using both ultrasound machines. Lines were defined by connecting two symmetric landmarks identified on the left and right transverse process of the same vertebrae, and spinal curvature was defined as the transverse process angle between two such lines, projected on the coronal plane. </p>
<p>RESULTS: Three healthy volunteers were scanned by both ultrasound configurations. Three experienced observers localized transverse processes as skeletal landmarks and obtained transverse process angles in images obtained from both ultrasounds. The mean difference per transverse process angle measured was 3.00 ± 2.1°. 94% of transverse processes visualized in the Sonix Touch were also visible in the Telemed. Inter-observer error in the Telemed was 4.5° and 4.3° in the Sonix Touch. </p>
<p>CONCLUSION: Price, convenience and accessibility suggest the Telemed to be a viable alternative in scoliosis monitoring, however further improvements in measurement protocol and image noise reduction must be completed before implementing the Telemed in the clinical setting. </p>
Tabanfar, Reza; Yan, Christina; Kempston, Michael; Borschneck, Daniel P.; Ungi, Tamas; Fichtinger, Gabor
Clinical feasibility of pediatric scoliosis monitoring using portable ultrasound Conference
Imaging Network Ontario (IMNO), 2016.
@conference{Tabanfar2016,
title = {Clinical feasibility of pediatric scoliosis monitoring using portable ultrasound},
author = {Reza Tabanfar and Christina Yan and Michael Kempston and Daniel P. Borschneck and Tamas Ungi and Gabor Fichtinger},
url = {https://labs.cs.queensu.ca/perklab/wp-content/uploads/sites/3/2024/02/Tabanfar2016b.pdf},
year = {2016},
date = {2016-01-01},
urldate = {2016-01-01},
booktitle = {Imaging Network Ontario (IMNO)},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Yan, Christina; Tabanfar, Reza; Kempston, Michael; Borschneck, Daniel P.; Ungi, Tamas; Fichtinger, Gabor
Vertebral landmark visualization with portable ultrasound imaging in scoliosis monitoring Conference
14th Annual Imaging Network Ontario Symposium (ImNO), 2016.
@conference{Yan2016,
title = {Vertebral landmark visualization with portable ultrasound imaging in scoliosis monitoring},
author = {Christina Yan and Reza Tabanfar and Michael Kempston and Daniel P. Borschneck and Tamas Ungi and Gabor Fichtinger},
url = {https://labs.cs.queensu.ca/perklab/wp-content/uploads/sites/3/2024/02/Yan2016b.pdf},
year = {2016},
date = {2016-01-01},
urldate = {2016-01-01},
booktitle = {14th Annual Imaging Network Ontario Symposium (ImNO)},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Tabanfar, Reza; Yan, Christina; Kempston, Michael; Borschneck, Daniel; Ungi, Tamas; Fichtinger, Gabor
Clinical workflow for spinal curvature measurement with portable ultrasound Journal Article
In: vol. 9786, pp. 149-154, 2016.
@article{fichtinger2016p,
title = {Clinical workflow for spinal curvature measurement with portable ultrasound},
author = {Reza Tabanfar and Christina Yan and Michael Kempston and Daniel Borschneck and Tamas Ungi and Gabor Fichtinger},
url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/9786/97860G/Clinical-workflow-for-spinal-curvature-measurement-with-portable-ultrasound/10.1117/12.2217249.short},
year = {2016},
date = {2016-01-01},
volume = {9786},
pages = {149-154},
publisher = {SPIE},
abstract = {PURPOSE
Spinal curvature monitoring is essential in making treatment decisions in scoliosis. Monitoring entails radiographic examinations, however repeated ionizing radiation exposure has been shown to increase cancer risk. Ultrasound does not emit ionizing radiation and is safer for spinal curvature monitoring. We investigated a clinical sonography protocol and challenges associated with position-tracked ultrasound in spinal curvature measurement in scoliosis.
METHODS
Transverse processes were landmarked along each vertebra using tracked ultrasound snapshots. The transverse process angle was used to determine the orientation of each vertebra. We tested our methodology on five patients in a local pediatric scoliosis clinic, comparing ultrasound to radiographic curvature measurements.
RESULTS
Despite strong correlation between radiographic and ultrasound curvature angles in phantom studies …},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
PURPOSE
Spinal curvature monitoring is essential in making treatment decisions in scoliosis. Monitoring entails radiographic examinations, however repeated ionizing radiation exposure has been shown to increase cancer risk. Ultrasound does not emit ionizing radiation and is safer for spinal curvature monitoring. We investigated a clinical sonography protocol and challenges associated with position-tracked ultrasound in spinal curvature measurement in scoliosis.
METHODS
Transverse processes were landmarked along each vertebra using tracked ultrasound snapshots. The transverse process angle was used to determine the orientation of each vertebra. We tested our methodology on five patients in a local pediatric scoliosis clinic, comparing ultrasound to radiographic curvature measurements.
RESULTS
Despite strong correlation between radiographic and ultrasound curvature angles in phantom studies …
Spinal curvature monitoring is essential in making treatment decisions in scoliosis. Monitoring entails radiographic examinations, however repeated ionizing radiation exposure has been shown to increase cancer risk. Ultrasound does not emit ionizing radiation and is safer for spinal curvature monitoring. We investigated a clinical sonography protocol and challenges associated with position-tracked ultrasound in spinal curvature measurement in scoliosis.
METHODS
Transverse processes were landmarked along each vertebra using tracked ultrasound snapshots. The transverse process angle was used to determine the orientation of each vertebra. We tested our methodology on five patients in a local pediatric scoliosis clinic, comparing ultrasound to radiographic curvature measurements.
RESULTS
Despite strong correlation between radiographic and ultrasound curvature angles in phantom studies …