AMOS: A Large-Scale Abdominal Multi-Organ Benchmark for Versatile Medical Image Segmentation

TL;DR

AMOS is a large, diverse dataset of abdominal CT and MRI scans with detailed organ annotations, designed to evaluate and improve multi-organ segmentation models across varied clinical scenarios.

Contribution

The paper introduces AMOS, a comprehensive large-scale benchmark dataset with multi-center, multi-vendor, multi-modality, and multi-disease data for abdominal organ segmentation.

Findings

Benchmark results show current models have room for improvement.

The dataset enables robust evaluation across diverse clinical scenarios.

Public availability promotes future research and development.

Abstract

Despite the considerable progress in automatic abdominal multi-organ segmentation from CT/MRI scans in recent years, a comprehensive evaluation of the models' capabilities is hampered by the lack of a large-scale benchmark from diverse clinical scenarios. Constraint by the high cost of collecting and labeling 3D medical data, most of the deep learning models to date are driven by datasets with a limited number of organs of interest or samples, which still limits the power of modern deep models and makes it difficult to provide a fully comprehensive and fair estimate of various methods. To mitigate the limitations, we present AMOS, a large-scale, diverse, clinical dataset for abdominal organ segmentation. AMOS provides 500 CT and 100 MRI scans collected from multi-center, multi-vendor, multi-modality, multi-phase, multi-disease patients, each with voxel-level annotations of 15 abdominal organs, providing challenging examples and test-bed for studying robust segmentation algorithms under diverse targets and scenarios. We further benchmark several state-of-the-art medical segmentation models to evaluate the status of the existing methods on this new challenging dataset. We have made our datasets, benchmark servers, and baselines publicly available, and hope to inspire future research. Information can be found at https://amos22.grand-challenge.org.