从可变辐射剂量图像中对肺瘤和死亡风险的不确定性意识定量CT评估
David Baraghoshi1,2, Matthew J Strand3,4, Stephen M Humphries5
1Department of Biostatistics and Informatics, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA. baraghoshid@njhealth.org.
European radiology
|April 4, 2025
概括
这项研究开发了一种不确定性意识的深度学习模型,用于使用CT扫描进行一致的肺气和死亡风险评估. 这种新方法提高了不同成像协议的稳定性,提高了COPD评估的临床实用性.
科学领域:
- 放射学和医学成像学 医学成像学
- 医疗保健中的人工智能
- 肺部医学 肺部医学
背景情况:
- 脑瘤的定量CT评估对CT协议敏感,导致不确定性和临床效用降低.
- 肺瘤评估的传统指标可能会受到成像参数变化的影响.
- 需要自动化,一致的方法来评估肺气和死亡风险.
研究的目的:
- 开发一种自动化方法,共同和一致地评估肺气和死亡风险.
- 在基于CT的肺瘤评估中量化数据和模型不确定性.
- 为了提高不同CT辐射剂量协议的肺瘤量化的稳定性.
主要方法:
- 在COPDGene研究中的胸部CT扫描上训练了一种多任务贝叶斯神经网络 (BNN).
- 不管采购协议如何,BNN估计了经体积调整的肺密度 (ALD) 和5年死亡风险.
- 将深度学习ALD (DL-ALD) 与传统ALD进行比较,并量化数据和模型不确定性.
主要成果:
- 与传统ALD相比,DL-ALD在全剂量 (FD) 和减少剂量 (RD) 的CT图像之间显示出更高的一致性.
- 预测的5年死亡风险显示图像协议之间的差异很小.
- 在患有严重肺气的参与者中,不确定性量化较低,在严重和早期阶段的参与者中,死亡风险较低.
结论:
- 多任务BNN为CT评估肺瘤的成像协议提供了更好的稳定性.
- 该方法提供直接测量不确定性,增强跨多种成像协议和患者群体的概括性.
- 意识到不确定性的深度学习提高了COPD评估的肺瘤量化和死亡风险评估的一致性.
相关概念视频
01:20Imaging Studies for Cardiovascular System III: X-Ray
116
The most common cardiovascular diagnostic test is an X-ray. It produces images of the heart, blood vessels, and adjacent structures.
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...
116
01:30Radiological Investigation I: X-ray and CT
185
Radiological investigations, including X-rays and computed tomography (CT) scans, are critical for diagnosing and evaluating various medical conditions. These imaging techniques provide valuable insights into the body's internal structures, aiding in the detection of abnormalities, assessment of disease progression, and development of treatment strategies. This article delves into two primary radiological investigations, chest X-rays and CT scans, outlining their purpose, procedures, and...
185
01:30Radiological Investigation II: MRI and Ventilation Perfusion Scan
87
Description
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
87