부분 신장 절제술 계획을 위한 하이브리드 CNN-트랜스포머 네트워크를 활용한 신장 종양 분할
Kidney Tumor Segmentation Using a Hybrid CNN -Trans f ormer Network for Partial Nephrectomy Planning
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초록
신장암 치료를 위한 부분 신장 절제술에서 수술 계획을 위한 신장 종양의 정확한 크기와 위치 등의 정보가 필수적이다. 따라서 신장 종양을 정확하게 분할하는 것이 중요하지만, 종양이 주변 장기와 밝기값이 유사하고 위치 및 크기가 환자마다 다양하여 분할에 어려움이 있다. 본 연구에서는 신장 종양의 분할 성능 개선을 목표로, 영상 내 지역적 및 전역적 특징을 모두 고려할 수 있는 합성곱 신경망과 트랜스포머가 결합된 하이브리드 네트워크를 제안한다. 제안 방법은 UNETR++와의 비교 실험에서 다이스 유사계수 78.54%, 정밀도 85.07%로 전반적으로 우수한 성능을 보였다. 또한, 종양 크기별 분석에서는 UNETR++에서 관찰되는 과대 분할 및 이상치가 개선된 결과를 보였다.
Abstract
In partial nephrectomy for kidney cancer treatment, accurate segmentation of the kidney tumor is crucial for surgical plannin g, as it provides essential information on the precise size and location of the tumor. However, it is challenging due to the tumor’s similar intensity to surrounding organs and the variability in its location and size across patients. In this study, we propose a hybrid network that integrates a convolutional neural network and a transformer to capture both local and global features, aiming to improve the segmentation performance of kidney tumors. We validated our method through comparative experiments with UNETR++, outperforming it with a Dice Similarity Coefficient (DSC) of 78.54% and a precision of 85.0 7%. Moreover, in the analysis by tumor size, our method demonstrated improvements by reducing over-segmentation and ou tlier cases observed in UNETR++.
참고문헌 (19)
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