Architecture Analysis and Benchmarking of 3D U-Shaped Deep Learning Models for Thoracic Anatomical Segmentation

• Published in: IEEE access Vol. 12; pp. 127592 - 127603
• Main Authors: Harirpoush, Arash, Rasoulian, Amirhossein, Kersten-Oertel, Marta, Xiao, Yiming
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 2024; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Accuracy; Algorithm ranking; Algorithms; anatomical segmentation; Benchmark testing; benchmarking; Benchmarks; Computational modeling; computed tomography; Configuration management; Deep learning; Digital imaging; Image segmentation; Machine learning; Medical imaging; Performance assessment; Solid modeling; Surgery; Task complexity; Thoracic surgery; Three-dimensional displays; Two dimensional analysis; U-shaped models
• ISSN: 2169-3536; 2169-3536
• DOI: 10.1109/ACCESS.2024.3456674

Recent rising interests in patient-specific thoracic surgical planning and simulation require efficient and robust creation of digital anatomical models from automatic medical image segmentation algorithms. Deep learning (DL) is now state-of-the-art in various radiological tasks, and U-shaped DL models have particularly excelled in medical image segmentation since the inception of the 2D UNet. To date, many variants of U-shaped models have been proposed by the integration of different attention mechanisms and network configurations. Systematic benchmark studies which analyze the architecture of these models by leveraging the recent development of the multi-label databases, can provide valuable insights for clinical deployment and future model designs, but such studies are still rare. We conduct the first systematic benchmark study for variants of 3D U-shaped models (3DUNet, STUNet, AttentionUNet, SwinUNETR, FocalSegNet, and a novel 3D SwinUnet with four variants) with a focus on CT-based anatomical segmentation for thoracic surgery. Our study systematically examines the impact of different attention mechanisms, the number of resolution stages, and network configurations on segmentation accuracy and computational complexity. To allow cross-reference with other recent benchmarking studies, we also included a performance assessment of the BTCV abdominal structural segmentation. With the STUNet ranking at the top, our study demonstrated the value of CNN-based U-shaped models for the investigated tasks and the benefit of residual blocks in network configuration designs to boost segmentation performance. The code and trained model weights from the study can be found at https://github.com/HealthX-Lab/DeepSegThoracic .