AbdomenCT-1K: Is Abdominal Organ Segmentation a Solved Problem?

• Published in: IEEE transactions on pattern analysis and machine intelligence Vol. 44; no. 10; pp. 6695 - 6714
• Main Authors: Ma, Jun, Zhang, Yao, Gu, Song, Zhu, Cheng, Ge, Cheng, Zhang, Yichi, An, Xingle, Wang, Congcong, Wang, Qiyuan, Liu, Xin, Cao, Shucheng, Zhang, Qi, Liu, Shangqing, Wang, Yunpeng, Li, Yuhui, He, Jian, Yang, Xiaoping
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.10.2022; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Abdomen; Benchmark testing; Benchmarks; Biological systems; Computed tomography; continual learning; Datasets; Deep learning; generalization; Health care facilities; Image segmentation; Kidney; Liver; Multi-organ segmentation; Pancreas; Segmentation; semi-supervised learning; weakly supervised learning
• ISSN: 0162-8828; 1939-3539; 2160-9292
• DOI: 10.1109/TPAMI.2021.3100536

With the unprecedented developments in deep learning, automatic segmentation of main abdominal organs seems to be a solved problem as state-of-the-art (SOTA) methods have achieved comparable results with inter-rater variability on many benchmark datasets. However, most of the existing abdominal datasets only contain single-center, single-phase, single-vendor, or single-disease cases, and it is unclear whether the excellent performance can generalize on diverse datasets. This paper presents a large and diverse abdominal CT organ segmentation dataset, termed AbdomenCT-1K, with more than 1000 (1K) CT scans from 12 medical centers, including multi-phase, multi-vendor, and multi-disease cases. Furthermore, we conduct a large-scale study for liver, kidney, spleen, and pancreas segmentation and reveal the unsolved segmentation problems of the SOTA methods, such as the limited generalization ability on distinct medical centers, phases, and unseen diseases. To advance the unsolved problems, we further build four organ segmentation benchmarks for fully supervised, semi-supervised, weakly supervised, and continual learning, which are currently challenging and active research topics. Accordingly, we develop a simple and effective method for each benchmark, which can be used as out-of-the-box methods and strong baselines. We believe the AbdomenCT-1K dataset will promote future in-depth research towards clinical applicable abdominal organ segmentation methods.