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绘制多个时间点超极化气体通风图像的区域变化图像,并通过放射科医生验证得分

Ummul Afia Shammi¹, Talissa Altes², Cody Thornburgh²

¹Richard and Loan Hill Department of Biomedical Engineering, University of Illinois Chicago, Chicago, Illinois, USA, uic.edu.

International journal of biomedical imaging

|January 1, 2026

概括

超极化气体MRI算法准确地绘制了肺部疾病患者的区域通风变化. 这些地图与放射科医生的评估一致,有助于对治疗有效性的临床评估.

科学领域:

肺部医学肺部医学
医疗成像医学成像
计算生物学计算生物学

背景情况:

高极化气体 (HPG) 磁共振成像 (MRI) 是FDA批准的一种技术,用于评估成人和儿童的肺功能和气体分布.
这种先进的成像模式为呼吸系统动态提供了新的见解.

研究的目的:

开发和验证一种算法,用于在患有喘,囊性纤维化和COPD的患者中生成区域通风变化图.
将这些定量图与放射科医生的定性评估进行比较,以确定准确性和临床实用性.

主要方法:

在治疗前和治疗后对20名患者 (9名喘患者,6名囊性纤维化患者,5名COPD患者) 进行了超极化3HeMRI.
图像处理涉及N4ITK偏差校正,光滑,正常化和注册,用于创建差异图.
放射科医生使用标题评估体积差异及其原因来评估地图.

主要成果:

算法生成的变化地图显示,在75%的病例中 (15/20),与放射科医生的视觉评估有很好的一致性.
在大多数情况下,观察到的体积差异很小或没有,只有少数显示中等到大差异.
该技术确定了通风中的短期改善 (STI).

结论:

来自HPG MRI的区域通风变化图与专家视觉评估是一致的.
这种定量方法显示出作为一种有价值的工具,用于对呼吸道疾病的通风变化进行纵向监测.

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Radiological Investigation II: MRI and Ventilation Perfusion Scan

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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...