3D区域成长的nnU-Net改善了CTPA上的肺栓塞检测:一个双队列验证研究
Ezio Lanza1,2, Angela Ammirabile3,4, Andrea Vanzulli3,5,6
1Department of Biomedical Sciences, Humanitas University, Milan, Italy. ezio.lanza@humanitas.it.
European radiology experimental
|March 4, 2026
概括
具有区域增长的3D nnU-Net模型显示在CTPA扫描上检测肺栓塞 (PE) 的性能优越. 虽然对自动凝块检测有效,但血凝块体积 (BCV) 无法预测患者的结果.
科学领域:
- 医疗成像医学成像
- 人工智能在医学中的应用
- 放射学 放射学是一门学科.
背景情况:
- 急性肺栓塞 (PE) 诊断依赖于计算机断层扫描肺血管造影 (CTPA).
- 准确检测和量化血块体积 (BCV) 对于患者管理至关重要.
- 使用深度学习的自动化方法有可能提高效率和准确性.
研究的目的:
- 将三种定制的nnU-Net模型进行比较,用于CTPA上的自动PE检测和BCV量化.
- 评估BCV与临床结果 (如存活率和主要心血管不良事件 (MACE)) 之间的关联.
主要方法:
- 对9715次CTPA检查进行了回顾性分析,以开发数据集.
- 三种nnU-Net模型的开发和内部/外部验证:二维基线,2D + 区域增长,3D + 区域增长.
- 使用精度,灵敏度,特异性和AUROC的性能评估;对BCV与临床结果的相关性分析.
主要成果:
- 具有区域增长的3D nnU-Net模型 (模型C) 在外部测试 (0.868) 和内部测试 (0.909) 中获得了最高的AUROC.
- 模型C在外部数据上的零凝结门上显示出高灵敏度 (83.6%) 和准确度 (79.5%).
- 血块体积 (BCV) 与MACE或生存率没有显著相关 (p=0.600).
结论:
- 具有区域增长的本地训练的3D nnU-Net模型为CTPA上的自动PE检测提供了卓越的性能和通用性.
- 这种3D模型为PE检测提供了强大的,在临床上可接受的性能,而不需要基于ROC的值.
- 虽然自动化BCV量化是有效的,但在本研究中没有发现它可以预测短期临床结果.
相关概念视频
Pulmonary Embolism II: Diagnostic Studies and Interprofessional Care
574
Diagnosing Pulmonary EmbolismDiagnosing pulmonary embolism (PE) involves clinical assessment and advanced imaging tests. The preferred diagnostic tool is the spiral (helical) CT scan or CT angiography (CTA), which uses intravenous contrast media to visualize the pulmonary vasculature and identify emboli.A ventilation-perfusion (V/Q) scan is an alternative for patients unable to receive contrast media. This scan includes both perfusion and ventilation scanning. Perfusion scanning involves...
574
Radiological Investigation III: Pulmonary Angiogram and PET Scan
550
Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
550
Pulmonary Embolism III: Nursing Management
567
A pulmonary embolism occurs when a thrombus, amniotic fluid, tumor tissue, fat, or air embolus blocks one or more pulmonary arteries. Effective nursing management and patient education are crucial for improving outcomes and preventing recurrence.Nursing management starts with obtaining a comprehensive patient history, particularly noting any history of deep vein thrombosis (DVT). Assess for clinical manifestations, including dyspnea, chest pain, crackles, heart murmurs, and signs of right-sided...
567


