Zsuzsanna Keri
Postdoctoral Researcher
School of Computing
Queen's University
Zsuzsanna Keri received MD degree in 2001 from the University of Szeged, Hungary. She completed her residency training in Internal Medicine at the 1st Department of Internal Medicine, University of Szeged and received board certification in 2006. She studied Health Information Management at St. Lawrence College, Kingston, Ontario and earned an Academic Award upon graduation in 2012. She has over 5 years experience in clinical practice, including regular shifts in emergency medicine. Her research interest is needle-based intervention training.
McGraw, Robert; Chaplin, Tim; Rocca, Nicole; Rang, Louise; Jaeger, Melanie; Holden, Matthew; Keri, Zsuzsanna; Fichtinger, Gabor
Cognitive load theory as a framework for simulation-based, ultrasound-guided internal jugular catheterization training: Once is not enough Journal Article
In: Canadian Journal of Emergency Medicine, vol. 21, iss. 1, pp. 141-148, 2019.
@article{fichtinger2019g,
title = {Cognitive load theory as a framework for simulation-based, ultrasound-guided internal jugular catheterization training: Once is not enough},
author = {Robert McGraw and Tim Chaplin and Nicole Rocca and Louise Rang and Melanie Jaeger and Matthew Holden and Zsuzsanna Keri and Gabor Fichtinger},
url = {https://www.cambridge.org/core/journals/canadian-journal-of-emergency-medicine/article/cognitive-load-theory-as-a-framework-for-simulationbased-ultrasoundguided-internal-jugular-catheterization-training-once-is-not-enough/BFC336D769F3B938B265759C5BED0491},
year = {2019},
date = {2019-01-01},
journal = {Canadian Journal of Emergency Medicine},
volume = {21},
issue = {1},
pages = {141-148},
publisher = {Cambridge University Press},
abstract = {ObjectiveThe main objective of this study was to use the principles of cognitive load theory to design a curriculum that incorporates a progressive part practice approach to teaching ultrasound-guided (USG) internal jugular catheterization (IJC) to novices. A secondary objective was to compare the technical proficiency of residents trained using this curriculum with the technical proficiency of residents trained with the current local standard of a single simulation session.MethodsThe experimental group included 16 residents who attended three 2-hour sessions of progressive part practice in a simulation lab. The control group included 46 residents who attended the current local standard of a single 2-hour simulation session just prior to their intensive care unit rotation. Technical proficiency was assessed using hand motion analysis and time to procedure completion.ResultsAfter three sessions, median scores for right …},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
ObjectiveThe main objective of this study was to use the principles of cognitive load theory to design a curriculum that incorporates a progressive part practice approach to teaching ultrasound-guided (USG) internal jugular catheterization (IJC) to novices. A secondary objective was to compare the technical proficiency of residents trained using this curriculum with the technical proficiency of residents trained with the current local standard of a single simulation session.MethodsThe experimental group included 16 residents who attended three 2-hour sessions of progressive part practice in a simulation lab. The control group included 46 residents who attended the current local standard of a single 2-hour simulation session just prior to their intensive care unit rotation. Technical proficiency was assessed using hand motion analysis and time to procedure completion.ResultsAfter three sessions, median scores for right …
Holden, Matthew S.; Xia, Sean; Lia, Hillary; Keri, Zsuzsanna; Bell, Colin; Patterson, Lindsey; Ungi, Tamas; Fichtinger, Gabor
Machine learning methods for automated technical skills assessment with instructional feedback in ultrasound-guided interventions Journal Article
In: Int J CARS, vol. 14, no. 11, pp. 1993–2003, 2019, ISSN: 1861-6429.
@article{Holden2019,
title = {Machine learning methods for automated technical skills assessment with instructional feedback in ultrasound-guided interventions},
author = {Matthew S. Holden and Sean Xia and Hillary Lia and Zsuzsanna Keri and Colin Bell and Lindsey Patterson and Tamas Ungi and Gabor Fichtinger},
url = {https://labs.cs.queensu.ca/perklab/wp-content/uploads/sites/3/2024/01/Holden2019a-manuscript-2.pdf
https://labs.cs.queensu.ca/perklab/wp-content/uploads/sites/3/2024/01/Holden2019a-2.pdf},
doi = {10.1007/s11548-019-01977-3},
issn = {1861-6429},
year = {2019},
date = {2019-01-01},
urldate = {2019-01-01},
journal = {Int J CARS},
volume = {14},
number = {11},
pages = {1993--2003},
publisher = {Springer Science and Business Media LLC},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Lia, H.; Paulin, Gregory; Yeo, Caitlin T; Andrews, Jessica; Yi, Nelson; Haq, Hassan; Emmanuel, Steve; Ludig, Kristian; Keri, Zsuzsanna; Lasso, Andras; Fichtinger, Gabor
HoloLens in Suturing Training Conference
SPIE Medical Imaging 2018: Image-Guided Procedures, Robotic Interventions, and Modeling, Houston, Texas, 2018.
@conference{Lia2018a,
title = {HoloLens in Suturing Training},
author = {H. Lia and Gregory Paulin and Caitlin T Yeo and Jessica Andrews and Nelson Yi and Hassan Haq and Steve Emmanuel and Kristian Ludig and Zsuzsanna Keri and Andras Lasso and Gabor Fichtinger},
url = {https://labs.cs.queensu.ca/perklab/wp-content/uploads/sites/3/2024/02/Lia2018a.pdf},
year = {2018},
date = {2018-03-01},
urldate = {2018-03-01},
booktitle = {SPIE Medical Imaging 2018: Image-Guided Procedures, Robotic Interventions, and Modeling},
address = {Houston, Texas},
keywords = {},
pubstate = {published},
tppubtype = {conference}
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Lia, H.; Paulin, Gregory; Yeo, Caitlin T; Andrews, Jessica; Yi, Nelson; Haq, Hassan; Emmanuel, Steve; Ludig, Kristian; Keri, Zsuzsanna; Lasso, Andras; Fichtinger, Gabor
Basic suturing training using Microsoft HoloLens Conference
ImNO 2018, Toronto, ON, 2018.
@conference{Lia2018b,
title = {Basic suturing training using Microsoft HoloLens},
author = {H. Lia and Gregory Paulin and Caitlin T Yeo and Jessica Andrews and Nelson Yi and Hassan Haq and Steve Emmanuel and Kristian Ludig and Zsuzsanna Keri and Andras Lasso and Gabor Fichtinger},
url = {https://labs.cs.queensu.ca/perklab/wp-content/uploads/sites/3/2024/02/Lia2018b.pdf},
year = {2018},
date = {2018-03-01},
urldate = {2018-03-01},
booktitle = {ImNO 2018},
address = {Toronto, ON},
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Holden, M.; Lia, H.; Xia, Sean; Keri, Zsuzsanna; Ungi, Tamas; Fichtinger, Gabor
Configurable Overall Skill Assessment in Ultrasound-Guided Needle Insertion Conference
16th Annual Imaging Network Ontario Symposium (ImNO), Toronto, Canada, 2018.
@conference{Holden2018b,
title = {Configurable Overall Skill Assessment in Ultrasound-Guided Needle Insertion},
author = {M. Holden and H. Lia and Sean Xia and Zsuzsanna Keri and Tamas Ungi and Gabor Fichtinger},
url = {https://labs.cs.queensu.ca/perklab/wp-content/uploads/sites/3/2024/02/Holden2018b.pdf},
year = {2018},
date = {2018-03-01},
urldate = {2018-03-01},
booktitle = {16th Annual Imaging Network Ontario Symposium (ImNO)},
address = {Toronto, Canada},
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pubstate = {published},
tppubtype = {conference}
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Hisey, Rebecca; Ungi, Tamas; Holden, M.; Baum, Zachary M C; Keri, Zsuzsanna; McCallum, Caitlin; Howes, Daniel; Fichtinger, Gabor
Imaging Network Ontario (IMNO), 2018.
@conference{Hisey2018b,
title = {Assessment of the use of webcam based workflow detection for providing real-time feedback in central venous catheterization training},
author = {Rebecca Hisey and Tamas Ungi and M. Holden and Zachary M C Baum and Zsuzsanna Keri and Caitlin McCallum and Daniel Howes and Gabor Fichtinger},
url = {https://labs.cs.queensu.ca/perklab/wp-content/uploads/sites/3/2024/02/Rebecca_ImNO2018_07.pdf},
year = {2018},
date = {2018-01-01},
urldate = {2018-01-01},
booktitle = {Imaging Network Ontario (IMNO)},
keywords = {},
pubstate = {published},
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Hisey, Rebecca; Ungi, Tamas; Holden, M.; Baum, Zachary M C; Keri, Zsuzsanna; McCallum, Caitlin; Howes, Daniel; Fichtinger, Gabor
Real-time workflow detection using webcam video for providing real-time feedback in central venous catheterization training Honorable Mention Conference
SPIE Medical Imaging 2018: Image-Guided Procedures, Robotic Interventions, and Modeling, 2018.
@conference{Hisey2018,
title = {Real-time workflow detection using webcam video for providing real-time feedback in central venous catheterization training},
author = {Rebecca Hisey and Tamas Ungi and M. Holden and Zachary M C Baum and Zsuzsanna Keri and Caitlin McCallum and Daniel Howes and Gabor Fichtinger},
url = {https://labs.cs.queensu.ca/perklab/wp-content/uploads/sites/3/2024/02/RHisey_SPIE2018_Full_02.pdf},
year = {2018},
date = {2018-01-01},
urldate = {2018-01-01},
booktitle = {SPIE Medical Imaging 2018: Image-Guided Procedures, Robotic Interventions, and Modeling},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Holden, Matthew S; Lia, Hillary; Xia, Sean; Keri, Zsuzsanna; Ungi, Tamas; Fichtinger, Gabor
Configurable overall skill assessment in ultrasound-guided needle insertion Journal Article
In: 16th annual imaging network Ontario symposium (ImNO), 2018.
@article{fichtinger2018m,
title = {Configurable overall skill assessment in ultrasound-guided needle insertion},
author = {Matthew S Holden and Hillary Lia and Sean Xia and Zsuzsanna Keri and Tamas Ungi and Gabor Fichtinger},
url = {http://perk.cs.queensu.ca/sites/perkd7.cs.queensu.ca/files/Holden2018b.pdf},
year = {2018},
date = {2018-01-01},
journal = {16th annual imaging network Ontario symposium (ImNO)},
abstract = {METHODS: We implemented three configurable and transparent methods for overall skill assessment. The first method uses a weighted combination of percentile ranked metric values, where the weight associated with each performance metric is configurable. The second method uses a k-nearest neighbours approach, where the scale in each dimension of metric space is configurable. The third method uses a fuzzy inference system with kernel density estimates as the membership functions, where the user may add, remove, or weight fuzzy different if-then rules. These methods were all implemented within the Perk Tutor platform ( www. perktutor. org) which allows the input performance metrics and parameters to be configured. Furthermore, these methods are connected directly to the training system to provide immediate feedback.
We conducted a retrospective validation study to compare the accuracy of skill …},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
METHODS: We implemented three configurable and transparent methods for overall skill assessment. The first method uses a weighted combination of percentile ranked metric values, where the weight associated with each performance metric is configurable. The second method uses a k-nearest neighbours approach, where the scale in each dimension of metric space is configurable. The third method uses a fuzzy inference system with kernel density estimates as the membership functions, where the user may add, remove, or weight fuzzy different if-then rules. These methods were all implemented within the Perk Tutor platform ( www. perktutor. org) which allows the input performance metrics and parameters to be configured. Furthermore, these methods are connected directly to the training system to provide immediate feedback.
We conducted a retrospective validation study to compare the accuracy of skill …
We conducted a retrospective validation study to compare the accuracy of skill …
Xia, Sean; Keri, Zsuzsanna; Holden, Matthew S; Hisey, Rebecca; Lia, Hillary; Ungi, Tamas; Mitchell, Christopher H; Fichtinger, Gabor
A learning curve analysis of ultrasound-guided in-plane and out-of-plane vascular access training with Perk Tutor Journal Article
In: vol. 10576, pp. 512-519, 2018.
@article{fichtinger2018i,
title = {A learning curve analysis of ultrasound-guided in-plane and out-of-plane vascular access training with Perk Tutor},
author = {Sean Xia and Zsuzsanna Keri and Matthew S Holden and Rebecca Hisey and Hillary Lia and Tamas Ungi and Christopher H Mitchell and Gabor Fichtinger},
url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10576/1057625/A-learning-curve-analysis-of-ultrasound-guided-in-plane-and/10.1117/12.2293789.short},
year = {2018},
date = {2018-01-01},
volume = {10576},
pages = {512-519},
publisher = {SPIE},
abstract = {PURPOSE
Under ultrasound guidance, procedures that have been traditionally performed using landmark approaches have become safer and more efficient. However, inexperienced trainees struggle with coordinating probe handling and needle insertion. We aimed to establish learning curves to identify the rate of acquisition of in-plane and out-of-plane vascular access skill in novice medical trainees.
METHODS
Thirty-eight novice participants were randomly assigned to perform either in-plane or out-of-plane insertions. Participants underwent baseline testing, four practice insertions (with 3D visualization assistance), and final testing; performance metrics were computed for all procedures. Five expert participants performed insertions in both approaches to establish expert performance metric benchmarks.
RESULTS In-plane novices (n=19) demonstrated significant final reductions in needle path inefficiency (45.8 …},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
PURPOSE
Under ultrasound guidance, procedures that have been traditionally performed using landmark approaches have become safer and more efficient. However, inexperienced trainees struggle with coordinating probe handling and needle insertion. We aimed to establish learning curves to identify the rate of acquisition of in-plane and out-of-plane vascular access skill in novice medical trainees.
METHODS
Thirty-eight novice participants were randomly assigned to perform either in-plane or out-of-plane insertions. Participants underwent baseline testing, four practice insertions (with 3D visualization assistance), and final testing; performance metrics were computed for all procedures. Five expert participants performed insertions in both approaches to establish expert performance metric benchmarks.
RESULTS In-plane novices (n=19) demonstrated significant final reductions in needle path inefficiency (45.8 …
Under ultrasound guidance, procedures that have been traditionally performed using landmark approaches have become safer and more efficient. However, inexperienced trainees struggle with coordinating probe handling and needle insertion. We aimed to establish learning curves to identify the rate of acquisition of in-plane and out-of-plane vascular access skill in novice medical trainees.
METHODS
Thirty-eight novice participants were randomly assigned to perform either in-plane or out-of-plane insertions. Participants underwent baseline testing, four practice insertions (with 3D visualization assistance), and final testing; performance metrics were computed for all procedures. Five expert participants performed insertions in both approaches to establish expert performance metric benchmarks.
RESULTS In-plane novices (n=19) demonstrated significant final reductions in needle path inefficiency (45.8 …
Lia, Hillary; Paulin, Gregory; Yeo, Caitlin T; Andrews, Jessica; Yi, Nelson; Haq, Hassan; Emmanuel, Steve; Ludig, Kristian; Keri, Zsuzsanna; Lasso, Andras; Fichtinger, Gabor
HoloLens in suturing training Journal Article
In: vol. 10576, pp. 544-550, 2018.
@article{fichtinger2018g,
title = {HoloLens in suturing training},
author = {Hillary Lia and Gregory Paulin and Caitlin T Yeo and Jessica Andrews and Nelson Yi and Hassan Haq and Steve Emmanuel and Kristian Ludig and Zsuzsanna Keri and Andras Lasso and Gabor Fichtinger},
url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10576/1057628/HoloLens-in-suturing-training/10.1117/12.2293934.short},
year = {2018},
date = {2018-01-01},
volume = {10576},
pages = {544-550},
publisher = {SPIE},
abstract = {PURPOSE
A training module for basic suturing training called Suture Tutor was developed by combining video instruction and voice commands with the Microsoft HoloLens software. We put forth two hypotheses: Trainees find the HoloLens helpful and 2.) HoloLens helps the trainees to achieve a better score in objective skill assessment tests.
METHODS
Software module was developed to show instructional video in the HoloLens under voice command. Thirtytwo participants were split into the control group or the HoloLens group. The control group used videos displayed on a computer during training while the HoloLens group practiced with Suture Tutor. Each group was given seven minutes to train with their assigned training method before testing. Testing involved replication of a running locking suturing pattern with a time limit of five minutes and was video recorded. The videos were expert reviewed. Participants …},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
PURPOSE
A training module for basic suturing training called Suture Tutor was developed by combining video instruction and voice commands with the Microsoft HoloLens software. We put forth two hypotheses: Trainees find the HoloLens helpful and 2.) HoloLens helps the trainees to achieve a better score in objective skill assessment tests.
METHODS
Software module was developed to show instructional video in the HoloLens under voice command. Thirtytwo participants were split into the control group or the HoloLens group. The control group used videos displayed on a computer during training while the HoloLens group practiced with Suture Tutor. Each group was given seven minutes to train with their assigned training method before testing. Testing involved replication of a running locking suturing pattern with a time limit of five minutes and was video recorded. The videos were expert reviewed. Participants …
A training module for basic suturing training called Suture Tutor was developed by combining video instruction and voice commands with the Microsoft HoloLens software. We put forth two hypotheses: Trainees find the HoloLens helpful and 2.) HoloLens helps the trainees to achieve a better score in objective skill assessment tests.
METHODS
Software module was developed to show instructional video in the HoloLens under voice command. Thirtytwo participants were split into the control group or the HoloLens group. The control group used videos displayed on a computer during training while the HoloLens group practiced with Suture Tutor. Each group was given seven minutes to train with their assigned training method before testing. Testing involved replication of a running locking suturing pattern with a time limit of five minutes and was video recorded. The videos were expert reviewed. Participants …
Holden, M.; Keri, Zsuzsanna; Ungi, Tamas; Yeo, Caitlin; Ring, Justine; Fichtinger, Gabor; Zevin, Boris
Reducing Cost and Complexity in Computer-Assisted Training for Lumpectomy Conference
William Ersil Resident Research Day, Kingston, Canada, 2017.
@conference{Holden2017c,
title = {Reducing Cost and Complexity in Computer-Assisted Training for Lumpectomy},
author = {M. Holden and Zsuzsanna Keri and Tamas Ungi and Caitlin Yeo and Justine Ring and Gabor Fichtinger and Boris Zevin},
url = {https://labs.cs.queensu.ca/perklab/wp-content/uploads/sites/3/2024/02/Holden2017c-poster.pdf
https://labs.cs.queensu.ca/perklab/wp-content/uploads/sites/3/2024/02/Holden2017c-poster.pdf},
year = {2017},
date = {2017-11-01},
urldate = {2017-11-01},
booktitle = {William Ersil Resident Research Day},
address = {Kingston, Canada},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Holden, M.; Keri, Zsuzsanna; Ungi, Tamas; Fichtinger, Gabor
Point-of-Care Ultrasound Workshop, vol. LNCS 10549, Springer Springer, Quebec City, QC, 2017.
@conference{Holden2017b,
title = {Overall Proficiency Assessment in Point-of-Care Ultrasound Interventions: The Stopwatch is not Enough},
author = {M. Holden and Zsuzsanna Keri and Tamas Ungi and Gabor Fichtinger},
url = {https://labs.cs.queensu.ca/perklab/wp-content/uploads/sites/3/2024/02/Holden2017b-Slides.pptx
https://labs.cs.queensu.ca/perklab/wp-content/uploads/sites/3/2024/02/Holden2017b-Slides.pptx},
year = {2017},
date = {2017-09-01},
urldate = {2017-09-01},
booktitle = {Point-of-Care Ultrasound Workshop},
volume = {LNCS 10549},
pages = {146-153},
publisher = {Springer},
address = {Quebec City, QC},
organization = {Springer},
keywords = {},
pubstate = {published},
tppubtype = {conference}
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Holden, Matthew S; Keri, Zsuzsanna; Ungi, Tamas; Fichtinger, Gabor
Overall proficiency assessment in point-of-care ultrasound interventions: the stopwatch is not enough Journal Article
In: pp. 146-153, 2017.
@article{fichtinger2017g,
title = {Overall proficiency assessment in point-of-care ultrasound interventions: the stopwatch is not enough},
author = {Matthew S Holden and Zsuzsanna Keri and Tamas Ungi and Gabor Fichtinger},
url = {https://link.springer.com/chapter/10.1007/978-3-319-67552-7_18},
year = {2017},
date = {2017-01-01},
pages = {146-153},
publisher = {Springer International Publishing},
abstract = {With the shift in the medical education curriculum to a competency-based model, objective proficiency assessment is necessary. In this work, we use exploratory factor analysis to assess which primitive metrics convey unique information about proficiency in point-of-care ultrasound applications. We retrospectively validate the proposed methods on three datasets: FAST examination, femoral line, and lumbar puncture. We identify a minimal set of metrics for proficiency assessment in each application. Furthermore, we validate that overall proficiency assessment methods are unaffected by the removal of redundant metrics. This work demonstrates that proficiency in point-of-care ultrasound applications is multi-faceted, and that measuring completion time alone is not enough and application-specific metrics have added value in proficiency assessment.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
With the shift in the medical education curriculum to a competency-based model, objective proficiency assessment is necessary. In this work, we use exploratory factor analysis to assess which primitive metrics convey unique information about proficiency in point-of-care ultrasound applications. We retrospectively validate the proposed methods on three datasets: FAST examination, femoral line, and lumbar puncture. We identify a minimal set of metrics for proficiency assessment in each application. Furthermore, we validate that overall proficiency assessment methods are unaffected by the removal of redundant metrics. This work demonstrates that proficiency in point-of-care ultrasound applications is multi-faceted, and that measuring completion time alone is not enough and application-specific metrics have added value in proficiency assessment.
Lia, H.; Keri, Zsuzsanna; Holden, M.; Harish, Vinyas; Mitchell, Christopher H; Ungi, Tamas; Fichtinger, Gabor
Training with Perk Tutor improves ultrasound-guided in-plane needle insertion skill Conference
SPIE Medical Imaging, vol. 10135, Orlando, FL, 2017.
@conference{Lia2017,
title = {Training with Perk Tutor improves ultrasound-guided in-plane needle insertion skill},
author = {H. Lia and Zsuzsanna Keri and M. Holden and Vinyas Harish and Christopher H Mitchell and Tamas Ungi and Gabor Fichtinger},
url = {https://labs.cs.queensu.ca/perklab/wp-content/uploads/sites/3/2024/02/Lia-SPIE2017.pdf},
year = {2017},
date = {2017-01-01},
urldate = {2017-01-01},
booktitle = {SPIE Medical Imaging},
volume = {10135},
address = {Orlando, FL},
abstract = {<p><strong>PURPOSE: </strong>The open-source Perk Tutor training platform has been shown to improve trainee performance in interventions that require ultrasound guidance. Our goal was to determine if needle coordination of medical trainees can be improved by training with Perk Tutor compared to training with ultrasound only. </p>
<p><strong>METHODS: </strong>Twenty participants with no previous experience were randomized into two groups; the Perk Tutor group and the Control group. The Perk Tutor group had access to the 3D visualization while the Control group used ultrasound only during their training. Performance was analyzed, measured and compared by Perk Tutor with regards to four needle coordination metrics. None of the groups had access to 3D visualization during performance testing. </p> <p><strong>RESULTS: </strong>The needle tracking measurements showed, for the Perk Tutor group, lower average distance between the needle tip and ultrasound (1.2 [0.9 – 2.8] mm \emph{vs }2.7 [2.3 – 4.0] mm, respectively; \emph{P }= 0.023) and lower maximum distance between the needle tip and ultrasound (2.2 [1.9 – 3.2] mm \emph{vs }4.6 [3.9 – 6.2] mm, respectively; \emph{P }= 0.013). There was no significant difference in average needle to ultrasound plane angle and maximum needle to ultrasound plane distance. All participants were successful in the procedure. </p>
<p><strong>CONCLUSION: </strong>The Perk Tutor group had significantly reduced distance from the needle tip to the ultrasound plane. Training with Perk Tutor can improve trainees’ needle and ultrasound coordination. </p>},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
<p><strong>PURPOSE: </strong>The open-source Perk Tutor training platform has been shown to improve trainee performance in interventions that require ultrasound guidance. Our goal was to determine if needle coordination of medical trainees can be improved by training with Perk Tutor compared to training with ultrasound only. </p>
<p><strong>METHODS: </strong>Twenty participants with no previous experience were randomized into two groups; the Perk Tutor group and the Control group. The Perk Tutor group had access to the 3D visualization while the Control group used ultrasound only during their training. Performance was analyzed, measured and compared by Perk Tutor with regards to four needle coordination metrics. None of the groups had access to 3D visualization during performance testing. </p> <p><strong>RESULTS: </strong>The needle tracking measurements showed, for the Perk Tutor group, lower average distance between the needle tip and ultrasound (1.2 [0.9 – 2.8] mm vs 2.7 [2.3 – 4.0] mm, respectively; P = 0.023) and lower maximum distance between the needle tip and ultrasound (2.2 [1.9 – 3.2] mm vs 4.6 [3.9 – 6.2] mm, respectively; P = 0.013). There was no significant difference in average needle to ultrasound plane angle and maximum needle to ultrasound plane distance. All participants were successful in the procedure. </p>
<p><strong>CONCLUSION: </strong>The Perk Tutor group had significantly reduced distance from the needle tip to the ultrasound plane. Training with Perk Tutor can improve trainees’ needle and ultrasound coordination. </p>
<p><strong>METHODS: </strong>Twenty participants with no previous experience were randomized into two groups; the Perk Tutor group and the Control group. The Perk Tutor group had access to the 3D visualization while the Control group used ultrasound only during their training. Performance was analyzed, measured and compared by Perk Tutor with regards to four needle coordination metrics. None of the groups had access to 3D visualization during performance testing. </p> <p><strong>RESULTS: </strong>The needle tracking measurements showed, for the Perk Tutor group, lower average distance between the needle tip and ultrasound (1.2 [0.9 – 2.8] mm vs 2.7 [2.3 – 4.0] mm, respectively; P = 0.023) and lower maximum distance between the needle tip and ultrasound (2.2 [1.9 – 3.2] mm vs 4.6 [3.9 – 6.2] mm, respectively; P = 0.013). There was no significant difference in average needle to ultrasound plane angle and maximum needle to ultrasound plane distance. All participants were successful in the procedure. </p>
<p><strong>CONCLUSION: </strong>The Perk Tutor group had significantly reduced distance from the needle tip to the ultrasound plane. Training with Perk Tutor can improve trainees’ needle and ultrasound coordination. </p>
McGraw, Robert C; Chaplin, Tim; McKaigney, Conor; Rang, Louise; Jaeger, Melanie; Redfearn, Damian; Davison, Colleen; Ungi, Tamas; Holden, M.; Yeo, Caitlin T; Keri, Zsuzsanna; Fichtinger, Gabor
Development and evaluation of a simulation-based curriculum for ultrasound guided central venous catheterization Journal Article
In: Canadian Journal of Emergency Medicine, vol. 18, no. 6, pp. 405-413, 2016.
@article{McGraw2015a,
title = {Development and evaluation of a simulation-based curriculum for ultrasound guided central venous catheterization},
author = {Robert C McGraw and Tim Chaplin and Conor McKaigney and Louise Rang and Melanie Jaeger and Damian Redfearn and Colleen Davison and Tamas Ungi and M. Holden and Caitlin T Yeo and Zsuzsanna Keri and Gabor Fichtinger},
doi = {10.1017/cem.2016.329},
year = {2016},
date = {2016-11-01},
urldate = {2016-11-01},
journal = {Canadian Journal of Emergency Medicine},
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pubstate = {published},
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McGraw, Robert; Chaplin, Tim; McKaigney, Conor; Rang, Louise; Jaeger, Melanie; Redfearn, Damian; Davison, Colleen; Ungi, Tamas; Holden, Matthew; Yeo, Caitlin; Keri, Zsuzsanna; Fichtinger, Gabor
Development and evaluation of a simulation-based curriculum for ultrasound-guided central venous catheterization Journal Article
In: Canadian Journal of Emergency Medicine, vol. 18, iss. 6, pp. 405-413, 2016.
@article{fichtinger2016d,
title = {Development and evaluation of a simulation-based curriculum for ultrasound-guided central venous catheterization},
author = {Robert McGraw and Tim Chaplin and Conor McKaigney and Louise Rang and Melanie Jaeger and Damian Redfearn and Colleen Davison and Tamas Ungi and Matthew Holden and Caitlin Yeo and Zsuzsanna Keri and Gabor Fichtinger},
url = {https://www.cambridge.org/core/journals/canadian-journal-of-emergency-medicine/article/development-and-evaluation-of-a-simulationbased-curriculum-for-ultrasoundguided-central-venous-catheterization/CED4CB6430AF030230D08697EF8FB5F1},
year = {2016},
date = {2016-01-01},
journal = {Canadian Journal of Emergency Medicine},
volume = {18},
issue = {6},
pages = {405-413},
publisher = {Cambridge University Press},
abstract = {ObjectiveTo develop a simulation-based curriculum for residents to learn ultrasound-guided (USG) central venous catheter (CVC) insertion, and to study the volume and type of practice that leads to technical proficiency.MethodsTen post-graduate year two residents from the Departments of Emergency Medicine and Anesthesiology completed four training sessions of two hours each, at two week intervals, where they engaged in a structured program of deliberate practice of the fundamental skills of USG CVC insertion on a simulator. Progress during training was monitored using regular hand motion analysis (HMA) and performance benchmarks were determined by HMA of local experts. Blinded assessment of video recordings was done at the end of training to assess technical competence using a global rating scale.ResultsNone of the residents met any of the expert benchmarks at baseline. Over the course of …},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
ObjectiveTo develop a simulation-based curriculum for residents to learn ultrasound-guided (USG) central venous catheter (CVC) insertion, and to study the volume and type of practice that leads to technical proficiency.MethodsTen post-graduate year two residents from the Departments of Emergency Medicine and Anesthesiology completed four training sessions of two hours each, at two week intervals, where they engaged in a structured program of deliberate practice of the fundamental skills of USG CVC insertion on a simulator. Progress during training was monitored using regular hand motion analysis (HMA) and performance benchmarks were determined by HMA of local experts. Blinded assessment of video recordings was done at the end of training to assess technical competence using a global rating scale.ResultsNone of the residents met any of the expert benchmarks at baseline. Over the course of …
Keri, Zsuzsanna; Sydor, Devin; Ungi, Tamas; Holden, M.; McGraw, Robert C; Mousavi, Parvin; Borschneck, Daniel P.; Fichtinger, Gabor; Jaeger, Melanie
Computerized training system for ultrasound-guided lumbar puncture on abnormal spine models: a randomized controlled trial Journal Article
In: Canadian Journal of Anesthesia, vol. 62, pp. 777-784, 2015.
@article{Keri2015a,
title = {Computerized training system for ultrasound-guided lumbar puncture on abnormal spine models: a randomized controlled trial},
author = {Zsuzsanna Keri and Devin Sydor and Tamas Ungi and M. Holden and Robert C McGraw and Parvin Mousavi and Daniel P. Borschneck and Gabor Fichtinger and Melanie Jaeger},
url = {http://www.ncbi.nlm.nih.gov/pubmed/25804431
https://labs.cs.queensu.ca/perklab/wp-content/uploads/sites/3/2024/02/Keri2015a_0.pdf},
year = {2015},
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Keri, Zsuzsanna; Sydor, Devin; Ungi, Tamas; Holden, Matthew S; McGraw, Robert; Mousavi, Parvin; Borschneck, Daniel P; Fichtinger, Gabor; Jaeger, Melanie
In: Canadian Journal of Anesthesia/Journal canadien d'anesthésie, vol. 62, pp. 777-784, 2015.
@article{fichtinger2015l,
title = {Un système de formation informatisé pour réaliser une ponction lombaire échoguidée sur des modèles de colonne vertébrale anormale: une étude randomisée contrôlée},
author = {Zsuzsanna Keri and Devin Sydor and Tamas Ungi and Matthew S Holden and Robert McGraw and Parvin Mousavi and Daniel P Borschneck and Gabor Fichtinger and Melanie Jaeger},
url = {https://link.springer.com/article/10.1007/s12630-015-0367-2},
year = {2015},
date = {2015-01-01},
journal = {Canadian Journal of Anesthesia/Journal canadien d'anesthésie},
volume = {62},
pages = {777-784},
publisher = {Springer US},
abstract = {Purpose
A randomized controlled trial was carried out to determine whether Perk Tutor, a computerized training platform that displays an ultrasound image and real-time needle position in a three-dimensional (3D) anatomical model, would benefit residents learning ultrasound-guided lumbar puncture (LP) in simulation phantoms with abnormal spinal anatomy.
Methods
Twenty-four residents were randomly assigned to either the Perk Tutor (P) or the Control (C) group and asked to perform an LP with ultrasound guidance on part-task trainers with spinal pathology. Group P was trained with the 3D display along with conventional ultrasound imaging, while Group C used conventional ultrasound only. Both groups were then tested solely with conventional ultrasound guidance on an abnormal spinal model not previously seen. We measured potential tissue …},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Purpose
A randomized controlled trial was carried out to determine whether Perk Tutor, a computerized training platform that displays an ultrasound image and real-time needle position in a three-dimensional (3D) anatomical model, would benefit residents learning ultrasound-guided lumbar puncture (LP) in simulation phantoms with abnormal spinal anatomy.
Methods
Twenty-four residents were randomly assigned to either the Perk Tutor (P) or the Control (C) group and asked to perform an LP with ultrasound guidance on part-task trainers with spinal pathology. Group P was trained with the 3D display along with conventional ultrasound imaging, while Group C used conventional ultrasound only. Both groups were then tested solely with conventional ultrasound guidance on an abnormal spinal model not previously seen. We measured potential tissue …
A randomized controlled trial was carried out to determine whether Perk Tutor, a computerized training platform that displays an ultrasound image and real-time needle position in a three-dimensional (3D) anatomical model, would benefit residents learning ultrasound-guided lumbar puncture (LP) in simulation phantoms with abnormal spinal anatomy.
Methods
Twenty-four residents were randomly assigned to either the Perk Tutor (P) or the Control (C) group and asked to perform an LP with ultrasound guidance on part-task trainers with spinal pathology. Group P was trained with the 3D display along with conventional ultrasound imaging, while Group C used conventional ultrasound only. Both groups were then tested solely with conventional ultrasound guidance on an abnormal spinal model not previously seen. We measured potential tissue …
Keri, Zsuzsanna; Sydor, Devin; Ungi, Tamas; Holden, M.; McGraw, Robert C; Borschneck, Daniel P.; Jaeger, Melanie; Fichtinger, Gabor
A novel technology for teaching ultrasound-guided lumbar puncture with Perk Tutor Conference
Imaging Network Ontario Symposium, Toronto, Ontario, March 23, 2014, 2014.
@conference{Keri2014a,
title = {A novel technology for teaching ultrasound-guided lumbar puncture with Perk Tutor},
author = {Zsuzsanna Keri and Devin Sydor and Tamas Ungi and M. Holden and Robert C McGraw and Daniel P. Borschneck and Melanie Jaeger and Gabor Fichtinger},
year = {2014},
date = {2014-03-01},
urldate = {2014-03-01},
booktitle = {Imaging Network Ontario Symposium},
address = {Toronto, Ontario, March 23, 2014},
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Ungi, Tamas; King, Franklin; Kempston, Michael; Keri, Zsuzsanna; Lasso, Andras; Mousavi, Parvin; Rudan, John; Borschneck, Daniel P.; Fichtinger, Gabor
Spinal curvature measurement by tracked ultrasound snapshots Journal Article
In: Ultrasound in Medicine and Biology, vol. 40, pp. 447-54, 2014.
@article{Ungi2014a,
title = {Spinal curvature measurement by tracked ultrasound snapshots},
author = {Tamas Ungi and Franklin King and Michael Kempston and Zsuzsanna Keri and Andras Lasso and Parvin Mousavi and John Rudan and Daniel P. Borschneck and Gabor Fichtinger},
url = {https://labs.cs.queensu.ca/perklab/wp-content/uploads/sites/3/2024/02/Ungi_2014a-manuscript.pdf},
year = {2014},
date = {2014-02-01},
urldate = {2014-02-01},
journal = {Ultrasound in Medicine and Biology},
volume = {40},
pages = {447-54},
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UNGI, TAMAS; KING, FRANKLIN; KEMPSTON, MICHAEL; KERI, ZSUZSANNA; LASSO, ANDRAS; MOUSAVI, PARVIN; RUDAN, JOHN; BORSCHNECK, DANIEL P; FICHTINGER, GABOR
Monitoring spinal curvature in adolescent kyphoscoliosis Journal Article
In: 2014.
@article{fichtinger2014t,
title = {Monitoring spinal curvature in adolescent kyphoscoliosis},
author = {TAMAS UNGI and FRANKLIN KING and MICHAEL KEMPSTON and ZSUZSANNA KERI and ANDRAS LASSO and PARVIN MOUSAVI and JOHN RUDAN and DANIEL P BORSCHNECK and GABOR FICHTINGER},
url = {https://scholar.google.ca/citations?view_op=view_citation&hl=en&user=_KxkI6UAAAAJ&cstart=500&pagesize=100&citation_for_view=_KxkI6UAAAAJ:WC9gN4BGCRcC},
year = {2014},
date = {2014-01-01},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Bartha, Laura; Lasso, Andras; Pinter, Csaba; Ungi, Tamas; Keri, Zsuzsanna; Fichtinger, Gabor
Open-source surface mesh-based ultrasound-guided spinal intervention simulator Journal Article
In: International Journal of Computer Assisted Radiology and Surgery, vol. 8, pp. 1043-51, 2013.
@article{Bartha2013b,
title = {Open-source surface mesh-based ultrasound-guided spinal intervention simulator},
author = {Laura Bartha and Andras Lasso and Csaba Pinter and Tamas Ungi and Zsuzsanna Keri and Gabor Fichtinger},
url = {https://labs.cs.queensu.ca/perklab/wp-content/uploads/sites/3/2024/02/Bartha2013b.pdf},
doi = {10.1007/s11548-013-0901-z},
year = {2013},
date = {2013-06-01},
urldate = {2013-06-01},
journal = {International Journal of Computer Assisted Radiology and Surgery},
volume = {8},
pages = {1043-51},
keywords = {},
pubstate = {published},
tppubtype = {article}
}