The Experts below are selected from a list of 109404 Experts worldwide ranked by ideXlab platform

Stamatia Giannarou - One of the best experts on this subject based on the ideXlab platform.

  • Automated vision-based microsurgical skill analysis in neurosurgery using deep learning: Development and preclinical validation.
    World neurosurgery, 2021
    Co-Authors: Joseph Davids, Savvas-george Makariou, Hutan Ashrafian, Ara Darzi, Hani J Marcus, Stamatia Giannarou
    Abstract:

    Technical skill acquisition is an essential component of neurosurgical training. Educational theory suggests that optimal learning and improvement in performance depends on the provision of objective feedback. he aim of this study was to develop a vision-based framework based on a novel Representation of surgical tool motion and Interactions capable of automated and objective assessment of microsurgical skill. Videos were obtained from one expert, six intermediate and twelve novice surgeons performing arachnoid dissection in a validated clinical model using a standard operating microscope. A Mask Region Convolutional Neural Network (Mask RCNN) framework was used to segment the tools present within the operative field in a recorded video frame. Tool motion analysis was achieved using novel triangulation metrics. Performance of the framework in classifying skill levels was evaluated using the Area Under the Curve (AUC) and accuracy. Objective measures of classifying the surgeons' skill level were also compared using the Mann-Whitney U test, and a value of p < 0.05 was considered statistically significant. The AUC was 0.977 and the accuracy was 84.21%. A number of differences were found, which included experts having a lower median dissector velocity (p=0.0004; 190.38 ms-1 vs 116.38 ms-1), and a smaller inter-tool tip distance (median 46.78 vs 75.92; p=0.0002) compared to novices. Automated and objective analysis of microsurgery using a Mask RCNN and a novel tool motion and Interaction Representation is feasible, and may support technical skills training and assessment in neurosurgery. Copyright © 2021. Published by Elsevier Inc.

  • automated vision based microsurgical skill analysis in neurosurgery using deep learning development and preclinical validation
    World Neurosurgery, 2021
    Co-Authors: Joseph Davids, Savvas-george Makariou, Hutan Ashrafian, Ara Darzi, Hani J Marcus, Stamatia Giannarou
    Abstract:

    BACKGROUND/OBJECTIVE Technical skill acquisition is an essential component of neurosurgical training. Educational theory suggests that optimal learning and improvement in performance depends on the provision of objective feedback. Therefore, the aim of this study was to develop a vision-based framework based on a novel Representation of surgical tool motion and Interactions capable of automated and objective assessment of microsurgical skill. METHODS Videos were obtained from 1 expert, 6 intermediate, and 12 novice surgeons performing arachnoid dissection in a validated clinical model using a standard operating microscope. A mask region convolutional neural network framework was used to segment the tools present within the operative field in a recorded video frame. Tool motion analysis was achieved using novel triangulation metrics. Performance of the framework in classifying skill levels was evaluated using the area under the curve and accuracy. Objective measures of classifying the surgeons' skill level were also compared using the Mann-Whitney U test, and a value of P < 0.05 was considered statistically significant. RESULTS The area under the curve was 0.977 and the accuracy was 84.21%. A number of differences were found, which included experts having a lower median dissector velocity (P = 0.0004; 190.38 ms-1 vs. 116.38 ms-1), and a smaller inter-tool tip distance (median 46.78 vs. 75.92; P = 0.0002) compared with novices. CONCLUSIONS Automated and objective analysis of microsurgery is feasible using a mask region convolutional neural network, and a novel tool motion and Interaction Representation. This may support technical skills training and assessment in neurosurgery.

  • automated vision based microsurgical skill analysis in neurosurgery using deep learning development and preclinical validation
    World Neurosurgery, 2021
    Co-Authors: Joseph Davids, Savvas-george Makariou, Hutan Ashrafian, Ara Darzi, Hani J Marcus, Stamatia Giannarou
    Abstract:

    Background/Objective Technical skill acquisition is an essential component of neurosurgical training. Educational theory suggests that optimal learning and improvement in performance depends on the provision of objective feedback. Therefore, the aim of this study was to develop a vision-based framework based on a novel Representation of surgical tool motion and Interactions capable of automated and objective assessment of microsurgical skill. Methods Videos were obtained from 1 expert, 6 intermediate, and 12 novice surgeons performing arachnoid dissection in a validated clinical model using a standard operating microscope. A mask region convolutional neural network framework was used to segment the tools present within the operative field in a recorded video frame. Tool motion analysis was achieved using novel triangulation metrics. Performance of the framework in classifying skill levels was evaluated using the area under the curve and accuracy. Objective measures of classifying the surgeons' skill level were also compared using the Mann–Whitney U test, and a value of P  Results The area under the curve was 0.977 and the accuracy was 84.21%. A number of differences were found, which included experts having a lower median dissector velocity (P = 0.0004; 190.38 ms–1 vs. 116.38 ms–1), and a smaller inter-tool tip distance (median 46.78 vs. 75.92; P = 0.0002) compared with novices. Conclusions Automated and objective analysis of microsurgery is feasible using a mask region convolutional neural network, and a novel tool motion and Interaction Representation. This may support technical skills training and assessment in neurosurgery.

Joseph Davids - One of the best experts on this subject based on the ideXlab platform.

  • Automated vision-based microsurgical skill analysis in neurosurgery using deep learning: Development and preclinical validation.
    World neurosurgery, 2021
    Co-Authors: Joseph Davids, Savvas-george Makariou, Hutan Ashrafian, Ara Darzi, Hani J Marcus, Stamatia Giannarou
    Abstract:

    Technical skill acquisition is an essential component of neurosurgical training. Educational theory suggests that optimal learning and improvement in performance depends on the provision of objective feedback. he aim of this study was to develop a vision-based framework based on a novel Representation of surgical tool motion and Interactions capable of automated and objective assessment of microsurgical skill. Videos were obtained from one expert, six intermediate and twelve novice surgeons performing arachnoid dissection in a validated clinical model using a standard operating microscope. A Mask Region Convolutional Neural Network (Mask RCNN) framework was used to segment the tools present within the operative field in a recorded video frame. Tool motion analysis was achieved using novel triangulation metrics. Performance of the framework in classifying skill levels was evaluated using the Area Under the Curve (AUC) and accuracy. Objective measures of classifying the surgeons' skill level were also compared using the Mann-Whitney U test, and a value of p < 0.05 was considered statistically significant. The AUC was 0.977 and the accuracy was 84.21%. A number of differences were found, which included experts having a lower median dissector velocity (p=0.0004; 190.38 ms-1 vs 116.38 ms-1), and a smaller inter-tool tip distance (median 46.78 vs 75.92; p=0.0002) compared to novices. Automated and objective analysis of microsurgery using a Mask RCNN and a novel tool motion and Interaction Representation is feasible, and may support technical skills training and assessment in neurosurgery. Copyright © 2021. Published by Elsevier Inc.

  • automated vision based microsurgical skill analysis in neurosurgery using deep learning development and preclinical validation
    World Neurosurgery, 2021
    Co-Authors: Joseph Davids, Savvas-george Makariou, Hutan Ashrafian, Ara Darzi, Hani J Marcus, Stamatia Giannarou
    Abstract:

    BACKGROUND/OBJECTIVE Technical skill acquisition is an essential component of neurosurgical training. Educational theory suggests that optimal learning and improvement in performance depends on the provision of objective feedback. Therefore, the aim of this study was to develop a vision-based framework based on a novel Representation of surgical tool motion and Interactions capable of automated and objective assessment of microsurgical skill. METHODS Videos were obtained from 1 expert, 6 intermediate, and 12 novice surgeons performing arachnoid dissection in a validated clinical model using a standard operating microscope. A mask region convolutional neural network framework was used to segment the tools present within the operative field in a recorded video frame. Tool motion analysis was achieved using novel triangulation metrics. Performance of the framework in classifying skill levels was evaluated using the area under the curve and accuracy. Objective measures of classifying the surgeons' skill level were also compared using the Mann-Whitney U test, and a value of P < 0.05 was considered statistically significant. RESULTS The area under the curve was 0.977 and the accuracy was 84.21%. A number of differences were found, which included experts having a lower median dissector velocity (P = 0.0004; 190.38 ms-1 vs. 116.38 ms-1), and a smaller inter-tool tip distance (median 46.78 vs. 75.92; P = 0.0002) compared with novices. CONCLUSIONS Automated and objective analysis of microsurgery is feasible using a mask region convolutional neural network, and a novel tool motion and Interaction Representation. This may support technical skills training and assessment in neurosurgery.

  • automated vision based microsurgical skill analysis in neurosurgery using deep learning development and preclinical validation
    World Neurosurgery, 2021
    Co-Authors: Joseph Davids, Savvas-george Makariou, Hutan Ashrafian, Ara Darzi, Hani J Marcus, Stamatia Giannarou
    Abstract:

    Background/Objective Technical skill acquisition is an essential component of neurosurgical training. Educational theory suggests that optimal learning and improvement in performance depends on the provision of objective feedback. Therefore, the aim of this study was to develop a vision-based framework based on a novel Representation of surgical tool motion and Interactions capable of automated and objective assessment of microsurgical skill. Methods Videos were obtained from 1 expert, 6 intermediate, and 12 novice surgeons performing arachnoid dissection in a validated clinical model using a standard operating microscope. A mask region convolutional neural network framework was used to segment the tools present within the operative field in a recorded video frame. Tool motion analysis was achieved using novel triangulation metrics. Performance of the framework in classifying skill levels was evaluated using the area under the curve and accuracy. Objective measures of classifying the surgeons' skill level were also compared using the Mann–Whitney U test, and a value of P  Results The area under the curve was 0.977 and the accuracy was 84.21%. A number of differences were found, which included experts having a lower median dissector velocity (P = 0.0004; 190.38 ms–1 vs. 116.38 ms–1), and a smaller inter-tool tip distance (median 46.78 vs. 75.92; P = 0.0002) compared with novices. Conclusions Automated and objective analysis of microsurgery is feasible using a mask region convolutional neural network, and a novel tool motion and Interaction Representation. This may support technical skills training and assessment in neurosurgery.

Hani J Marcus - One of the best experts on this subject based on the ideXlab platform.

  • Automated vision-based microsurgical skill analysis in neurosurgery using deep learning: Development and preclinical validation.
    World neurosurgery, 2021
    Co-Authors: Joseph Davids, Savvas-george Makariou, Hutan Ashrafian, Ara Darzi, Hani J Marcus, Stamatia Giannarou
    Abstract:

    Technical skill acquisition is an essential component of neurosurgical training. Educational theory suggests that optimal learning and improvement in performance depends on the provision of objective feedback. he aim of this study was to develop a vision-based framework based on a novel Representation of surgical tool motion and Interactions capable of automated and objective assessment of microsurgical skill. Videos were obtained from one expert, six intermediate and twelve novice surgeons performing arachnoid dissection in a validated clinical model using a standard operating microscope. A Mask Region Convolutional Neural Network (Mask RCNN) framework was used to segment the tools present within the operative field in a recorded video frame. Tool motion analysis was achieved using novel triangulation metrics. Performance of the framework in classifying skill levels was evaluated using the Area Under the Curve (AUC) and accuracy. Objective measures of classifying the surgeons' skill level were also compared using the Mann-Whitney U test, and a value of p < 0.05 was considered statistically significant. The AUC was 0.977 and the accuracy was 84.21%. A number of differences were found, which included experts having a lower median dissector velocity (p=0.0004; 190.38 ms-1 vs 116.38 ms-1), and a smaller inter-tool tip distance (median 46.78 vs 75.92; p=0.0002) compared to novices. Automated and objective analysis of microsurgery using a Mask RCNN and a novel tool motion and Interaction Representation is feasible, and may support technical skills training and assessment in neurosurgery. Copyright © 2021. Published by Elsevier Inc.

  • automated vision based microsurgical skill analysis in neurosurgery using deep learning development and preclinical validation
    World Neurosurgery, 2021
    Co-Authors: Joseph Davids, Savvas-george Makariou, Hutan Ashrafian, Ara Darzi, Hani J Marcus, Stamatia Giannarou
    Abstract:

    BACKGROUND/OBJECTIVE Technical skill acquisition is an essential component of neurosurgical training. Educational theory suggests that optimal learning and improvement in performance depends on the provision of objective feedback. Therefore, the aim of this study was to develop a vision-based framework based on a novel Representation of surgical tool motion and Interactions capable of automated and objective assessment of microsurgical skill. METHODS Videos were obtained from 1 expert, 6 intermediate, and 12 novice surgeons performing arachnoid dissection in a validated clinical model using a standard operating microscope. A mask region convolutional neural network framework was used to segment the tools present within the operative field in a recorded video frame. Tool motion analysis was achieved using novel triangulation metrics. Performance of the framework in classifying skill levels was evaluated using the area under the curve and accuracy. Objective measures of classifying the surgeons' skill level were also compared using the Mann-Whitney U test, and a value of P < 0.05 was considered statistically significant. RESULTS The area under the curve was 0.977 and the accuracy was 84.21%. A number of differences were found, which included experts having a lower median dissector velocity (P = 0.0004; 190.38 ms-1 vs. 116.38 ms-1), and a smaller inter-tool tip distance (median 46.78 vs. 75.92; P = 0.0002) compared with novices. CONCLUSIONS Automated and objective analysis of microsurgery is feasible using a mask region convolutional neural network, and a novel tool motion and Interaction Representation. This may support technical skills training and assessment in neurosurgery.

  • automated vision based microsurgical skill analysis in neurosurgery using deep learning development and preclinical validation
    World Neurosurgery, 2021
    Co-Authors: Joseph Davids, Savvas-george Makariou, Hutan Ashrafian, Ara Darzi, Hani J Marcus, Stamatia Giannarou
    Abstract:

    Background/Objective Technical skill acquisition is an essential component of neurosurgical training. Educational theory suggests that optimal learning and improvement in performance depends on the provision of objective feedback. Therefore, the aim of this study was to develop a vision-based framework based on a novel Representation of surgical tool motion and Interactions capable of automated and objective assessment of microsurgical skill. Methods Videos were obtained from 1 expert, 6 intermediate, and 12 novice surgeons performing arachnoid dissection in a validated clinical model using a standard operating microscope. A mask region convolutional neural network framework was used to segment the tools present within the operative field in a recorded video frame. Tool motion analysis was achieved using novel triangulation metrics. Performance of the framework in classifying skill levels was evaluated using the area under the curve and accuracy. Objective measures of classifying the surgeons' skill level were also compared using the Mann–Whitney U test, and a value of P  Results The area under the curve was 0.977 and the accuracy was 84.21%. A number of differences were found, which included experts having a lower median dissector velocity (P = 0.0004; 190.38 ms–1 vs. 116.38 ms–1), and a smaller inter-tool tip distance (median 46.78 vs. 75.92; P = 0.0002) compared with novices. Conclusions Automated and objective analysis of microsurgery is feasible using a mask region convolutional neural network, and a novel tool motion and Interaction Representation. This may support technical skills training and assessment in neurosurgery.

Ara Darzi - One of the best experts on this subject based on the ideXlab platform.

  • Automated vision-based microsurgical skill analysis in neurosurgery using deep learning: Development and preclinical validation.
    World neurosurgery, 2021
    Co-Authors: Joseph Davids, Savvas-george Makariou, Hutan Ashrafian, Ara Darzi, Hani J Marcus, Stamatia Giannarou
    Abstract:

    Technical skill acquisition is an essential component of neurosurgical training. Educational theory suggests that optimal learning and improvement in performance depends on the provision of objective feedback. he aim of this study was to develop a vision-based framework based on a novel Representation of surgical tool motion and Interactions capable of automated and objective assessment of microsurgical skill. Videos were obtained from one expert, six intermediate and twelve novice surgeons performing arachnoid dissection in a validated clinical model using a standard operating microscope. A Mask Region Convolutional Neural Network (Mask RCNN) framework was used to segment the tools present within the operative field in a recorded video frame. Tool motion analysis was achieved using novel triangulation metrics. Performance of the framework in classifying skill levels was evaluated using the Area Under the Curve (AUC) and accuracy. Objective measures of classifying the surgeons' skill level were also compared using the Mann-Whitney U test, and a value of p < 0.05 was considered statistically significant. The AUC was 0.977 and the accuracy was 84.21%. A number of differences were found, which included experts having a lower median dissector velocity (p=0.0004; 190.38 ms-1 vs 116.38 ms-1), and a smaller inter-tool tip distance (median 46.78 vs 75.92; p=0.0002) compared to novices. Automated and objective analysis of microsurgery using a Mask RCNN and a novel tool motion and Interaction Representation is feasible, and may support technical skills training and assessment in neurosurgery. Copyright © 2021. Published by Elsevier Inc.

  • automated vision based microsurgical skill analysis in neurosurgery using deep learning development and preclinical validation
    World Neurosurgery, 2021
    Co-Authors: Joseph Davids, Savvas-george Makariou, Hutan Ashrafian, Ara Darzi, Hani J Marcus, Stamatia Giannarou
    Abstract:

    BACKGROUND/OBJECTIVE Technical skill acquisition is an essential component of neurosurgical training. Educational theory suggests that optimal learning and improvement in performance depends on the provision of objective feedback. Therefore, the aim of this study was to develop a vision-based framework based on a novel Representation of surgical tool motion and Interactions capable of automated and objective assessment of microsurgical skill. METHODS Videos were obtained from 1 expert, 6 intermediate, and 12 novice surgeons performing arachnoid dissection in a validated clinical model using a standard operating microscope. A mask region convolutional neural network framework was used to segment the tools present within the operative field in a recorded video frame. Tool motion analysis was achieved using novel triangulation metrics. Performance of the framework in classifying skill levels was evaluated using the area under the curve and accuracy. Objective measures of classifying the surgeons' skill level were also compared using the Mann-Whitney U test, and a value of P < 0.05 was considered statistically significant. RESULTS The area under the curve was 0.977 and the accuracy was 84.21%. A number of differences were found, which included experts having a lower median dissector velocity (P = 0.0004; 190.38 ms-1 vs. 116.38 ms-1), and a smaller inter-tool tip distance (median 46.78 vs. 75.92; P = 0.0002) compared with novices. CONCLUSIONS Automated and objective analysis of microsurgery is feasible using a mask region convolutional neural network, and a novel tool motion and Interaction Representation. This may support technical skills training and assessment in neurosurgery.

  • automated vision based microsurgical skill analysis in neurosurgery using deep learning development and preclinical validation
    World Neurosurgery, 2021
    Co-Authors: Joseph Davids, Savvas-george Makariou, Hutan Ashrafian, Ara Darzi, Hani J Marcus, Stamatia Giannarou
    Abstract:

    Background/Objective Technical skill acquisition is an essential component of neurosurgical training. Educational theory suggests that optimal learning and improvement in performance depends on the provision of objective feedback. Therefore, the aim of this study was to develop a vision-based framework based on a novel Representation of surgical tool motion and Interactions capable of automated and objective assessment of microsurgical skill. Methods Videos were obtained from 1 expert, 6 intermediate, and 12 novice surgeons performing arachnoid dissection in a validated clinical model using a standard operating microscope. A mask region convolutional neural network framework was used to segment the tools present within the operative field in a recorded video frame. Tool motion analysis was achieved using novel triangulation metrics. Performance of the framework in classifying skill levels was evaluated using the area under the curve and accuracy. Objective measures of classifying the surgeons' skill level were also compared using the Mann–Whitney U test, and a value of P  Results The area under the curve was 0.977 and the accuracy was 84.21%. A number of differences were found, which included experts having a lower median dissector velocity (P = 0.0004; 190.38 ms–1 vs. 116.38 ms–1), and a smaller inter-tool tip distance (median 46.78 vs. 75.92; P = 0.0002) compared with novices. Conclusions Automated and objective analysis of microsurgery is feasible using a mask region convolutional neural network, and a novel tool motion and Interaction Representation. This may support technical skills training and assessment in neurosurgery.

Hutan Ashrafian - One of the best experts on this subject based on the ideXlab platform.

  • Automated vision-based microsurgical skill analysis in neurosurgery using deep learning: Development and preclinical validation.
    World neurosurgery, 2021
    Co-Authors: Joseph Davids, Savvas-george Makariou, Hutan Ashrafian, Ara Darzi, Hani J Marcus, Stamatia Giannarou
    Abstract:

    Technical skill acquisition is an essential component of neurosurgical training. Educational theory suggests that optimal learning and improvement in performance depends on the provision of objective feedback. he aim of this study was to develop a vision-based framework based on a novel Representation of surgical tool motion and Interactions capable of automated and objective assessment of microsurgical skill. Videos were obtained from one expert, six intermediate and twelve novice surgeons performing arachnoid dissection in a validated clinical model using a standard operating microscope. A Mask Region Convolutional Neural Network (Mask RCNN) framework was used to segment the tools present within the operative field in a recorded video frame. Tool motion analysis was achieved using novel triangulation metrics. Performance of the framework in classifying skill levels was evaluated using the Area Under the Curve (AUC) and accuracy. Objective measures of classifying the surgeons' skill level were also compared using the Mann-Whitney U test, and a value of p < 0.05 was considered statistically significant. The AUC was 0.977 and the accuracy was 84.21%. A number of differences were found, which included experts having a lower median dissector velocity (p=0.0004; 190.38 ms-1 vs 116.38 ms-1), and a smaller inter-tool tip distance (median 46.78 vs 75.92; p=0.0002) compared to novices. Automated and objective analysis of microsurgery using a Mask RCNN and a novel tool motion and Interaction Representation is feasible, and may support technical skills training and assessment in neurosurgery. Copyright © 2021. Published by Elsevier Inc.

  • automated vision based microsurgical skill analysis in neurosurgery using deep learning development and preclinical validation
    World Neurosurgery, 2021
    Co-Authors: Joseph Davids, Savvas-george Makariou, Hutan Ashrafian, Ara Darzi, Hani J Marcus, Stamatia Giannarou
    Abstract:

    BACKGROUND/OBJECTIVE Technical skill acquisition is an essential component of neurosurgical training. Educational theory suggests that optimal learning and improvement in performance depends on the provision of objective feedback. Therefore, the aim of this study was to develop a vision-based framework based on a novel Representation of surgical tool motion and Interactions capable of automated and objective assessment of microsurgical skill. METHODS Videos were obtained from 1 expert, 6 intermediate, and 12 novice surgeons performing arachnoid dissection in a validated clinical model using a standard operating microscope. A mask region convolutional neural network framework was used to segment the tools present within the operative field in a recorded video frame. Tool motion analysis was achieved using novel triangulation metrics. Performance of the framework in classifying skill levels was evaluated using the area under the curve and accuracy. Objective measures of classifying the surgeons' skill level were also compared using the Mann-Whitney U test, and a value of P < 0.05 was considered statistically significant. RESULTS The area under the curve was 0.977 and the accuracy was 84.21%. A number of differences were found, which included experts having a lower median dissector velocity (P = 0.0004; 190.38 ms-1 vs. 116.38 ms-1), and a smaller inter-tool tip distance (median 46.78 vs. 75.92; P = 0.0002) compared with novices. CONCLUSIONS Automated and objective analysis of microsurgery is feasible using a mask region convolutional neural network, and a novel tool motion and Interaction Representation. This may support technical skills training and assessment in neurosurgery.

  • automated vision based microsurgical skill analysis in neurosurgery using deep learning development and preclinical validation
    World Neurosurgery, 2021
    Co-Authors: Joseph Davids, Savvas-george Makariou, Hutan Ashrafian, Ara Darzi, Hani J Marcus, Stamatia Giannarou
    Abstract:

    Background/Objective Technical skill acquisition is an essential component of neurosurgical training. Educational theory suggests that optimal learning and improvement in performance depends on the provision of objective feedback. Therefore, the aim of this study was to develop a vision-based framework based on a novel Representation of surgical tool motion and Interactions capable of automated and objective assessment of microsurgical skill. Methods Videos were obtained from 1 expert, 6 intermediate, and 12 novice surgeons performing arachnoid dissection in a validated clinical model using a standard operating microscope. A mask region convolutional neural network framework was used to segment the tools present within the operative field in a recorded video frame. Tool motion analysis was achieved using novel triangulation metrics. Performance of the framework in classifying skill levels was evaluated using the area under the curve and accuracy. Objective measures of classifying the surgeons' skill level were also compared using the Mann–Whitney U test, and a value of P  Results The area under the curve was 0.977 and the accuracy was 84.21%. A number of differences were found, which included experts having a lower median dissector velocity (P = 0.0004; 190.38 ms–1 vs. 116.38 ms–1), and a smaller inter-tool tip distance (median 46.78 vs. 75.92; P = 0.0002) compared with novices. Conclusions Automated and objective analysis of microsurgery is feasible using a mask region convolutional neural network, and a novel tool motion and Interaction Representation. This may support technical skills training and assessment in neurosurgery.