Deep Learning Segmentation of Ascites on Abdominal CT Scans for Automatic Volume Quantification.

IF 8.1 Q1 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Radiology-Artificial Intelligence Pub Date : 2024-09-01 DOI:10.1148/ryai.230601
Benjamin Hou, Sungwon Lee, Jung-Min Lee, Christopher Koh, Jing Xiao, Perry J Pickhardt, Ronald M Summers
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Abstract

Purpose To evaluate the performance of an automated deep learning method in detecting ascites and subsequently quantifying its volume in patients with liver cirrhosis and patients with ovarian cancer. Materials and Methods This retrospective study included contrast-enhanced and noncontrast abdominal-pelvic CT scans of patients with cirrhotic ascites and patients with ovarian cancer from two institutions, National Institutes of Health (NIH) and University of Wisconsin (UofW). The model, trained on The Cancer Genome Atlas Ovarian Cancer dataset (mean age [±SD], 60 years ± 11; 143 female), was tested on two internal datasets (NIH-LC and NIH-OV) and one external dataset (UofW-LC). Its performance was measured by the F1/Dice coefficient, SDs, and 95% CIs, focusing on ascites volume in the peritoneal cavity. Results On NIH-LC (25 patients; mean age, 59 years ± 14; 14 male) and NIH-OV (166 patients; mean age, 65 years ± 9; all female), the model achieved F1/Dice scores of 85.5% ± 6.1 (95% CI: 83.1, 87.8) and 82.6% ± 15.3 (95% CI: 76.4, 88.7), with median volume estimation errors of 19.6% (IQR, 13.2%-29.0%) and 5.3% (IQR: 2.4%-9.7%), respectively. On UofW-LC (124 patients; mean age, 46 years ± 12; 73 female), the model had a F1/Dice score of 83.0% ± 10.7 (95% CI: 79.8, 86.3) and median volume estimation error of 9.7% (IQR, 4.5%-15.1%). The model showed strong agreement with expert assessments, with r2 values of 0.79, 0.98, and 0.97 across the test sets. Conclusion The proposed deep learning method performed well in segmenting and quantifying the volume of ascites in patients with cirrhosis and those with ovarian cancer, in concordance with expert radiologist assessments. Keywords: Abdomen/GI, Cirrhosis, Deep Learning, Segmentation Supplemental material is available for this article. © RSNA, 2024 See also commentary by Aisen and Rodrigues in this issue.

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深度学习分割腹部 CT 扫描上的腹水,实现自动体积定量。
"刚刚接受 "的论文经过同行评审,已被接受在《放射学》上发表:人工智能》上发表。这篇文章在以最终版本发表之前,还将经过校对、排版和校对审核。请注意,在制作最终校对稿的过程中,可能会发现影响内容的错误。目的 评估一种自动深度学习方法在检测肝硬化和卵巢癌患者腹水并随后量化其体积方面的性能。材料与方法 这项回顾性研究纳入了来自美国国立卫生研究院(NIH)和威斯康星大学(UofW)两家机构的肝硬化腹水患者和卵巢癌患者的对比增强和非对比腹盆腔 CT 扫描。该模型在癌症基因组图谱卵巢癌数据集(平均年龄为 60 岁 ± 11 [SD];143 名女性)上进行了训练,并在两个内部数据集(NIH-LC 和 NIH-OV)和一个外部数据集(UofW-LC)上进行了测试。其性能通过狄斯系数、标准偏差和 95% 置信区间来衡量,重点是腹腔腹水体积。结果 在 NIH-LC(25 名患者;平均年龄为 59 岁 ± 14 岁;14 名男性)和 NIH-OV(166 名患者;平均年龄为 65 岁 ± 9 岁;均为女性)上,该模型的 Dice 分数分别为 85.5% ± 6.1% (CI: 83.1%-87.8%) 和 82.6% ± 15.3% (CI: 76.4%-88.7%) ,体积估计误差中位数分别为 19.6% (IQR: 13.2%-29.0%) 和 5.3% (IQR: 2.4%- 9.7%)。在 UofW-LC 中(124 名患者;平均年龄 46 岁 ± 12 岁;73 名女性),该模型的 Dice 得分为 83.0% ± 10.7% (CI:79.8%-86.3%),体积估计误差中位数为 9.7%(IQR:4.5%-15.1%)。该模型与专家评估结果具有很高的一致性,在所有测试集中的 r2 值分别为 0.79、0.98 和 0.97。结论 所提出的深度学习方法在分割和量化腹水体积方面表现良好,与放射科专家的评估结果一致。©RSNA, 2024.
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CiteScore
16.20
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期刊介绍: Radiology: Artificial Intelligence is a bi-monthly publication that focuses on the emerging applications of machine learning and artificial intelligence in the field of imaging across various disciplines. This journal is available online and accepts multiple manuscript types, including Original Research, Technical Developments, Data Resources, Review articles, Editorials, Letters to the Editor and Replies, Special Reports, and AI in Brief.
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