Pixel-level tumor margin assessment of surgical specimen with hyperspectral imaging and deep learning classification

Ling Ma; Maysam Shahedi; Ted Shi; Martin Halicek; James V. Little; Amy Y. Chen; Larry L. Myers; Baran D. Sumer; Baowei Fei

doi:10.1117/12.2581046

15 February 2021 Pixel-level tumor margin assessment of surgical specimen with hyperspectral imaging and deep learning classification

Ling Ma, Maysam Shahedi, Ted Shi, Martin Halicek, James V. Little, Amy Y. Chen, Larry L. Myers, Baran D. Sumer, Baowei Fei

Author Affiliations +

Proceedings Volume 11598, Medical Imaging 2021: Image-Guided Procedures, Robotic Interventions, and Modeling; 1159811 (2021) https://doi.org/10.1117/12.2581046
Event: SPIE Medical Imaging, 2021, Online Only

Abstract

Surgery is a major treatment method for squamous cell carcinoma (SCC). During surgery, insufficient tumor margin may lead to local recurrence of cancer. Hyperspectral imaging (HSI) is a promising optical imaging technique for in vivo cancer detection and tumor margin assessment. In this study, a fully convolutional network (FCN) was implemented for tumor detection and margin assessment in hyperspectral images of SCC. The FCN was trained and tested with hyperspectral images of 25 ex vivo SCC surgical specimens from 20 different patients. The network was evaluated per patient and achieved pixel-level tissue classification with an average AUC of 0.88, 0.83 accuracy, 0.84 sensitivity and 0.70 specificity. The 95% Hausdorff distance of assessed tumor margin in 17 patients was less than 2 mm, and the classification time of each tissue specimen took less than 10 seconds. The proposed method potentially facilitates intraoperative tumor margin assessment and improves surgical outcomes.

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Ling Ma, Maysam Shahedi, Ted Shi, Martin Halicek, James V. Little, Amy Y. Chen, Larry L. Myers, Baran D. Sumer, and Baowei Fei "Pixel-level tumor margin assessment of surgical specimen with hyperspectral imaging and deep learning classification", Proc. SPIE 11598, Medical Imaging 2021: Image-Guided Procedures, Robotic Interventions, and Modeling, 1159811 (15 February 2021); https://doi.org/10.1117/12.2581046

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