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Quantitative Mapping of Specific Ventilation in the Human Lung using Proton Magnetic Resonance Imaging and Oxygen as a Contrast Agent
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拓参数响应映射识别了与气瘤进展相关的组织亚型.

Jennifer M Wang1, Alexander J Bell2, Sundaresh Ram3

  • 1Division of Pulmonary and Critical Care Medicine, University of Michigan, Ann Arbor, Michigan (J.M.W., W.W.L., M.K.H.).

Academic radiology
|September 4, 2023
PubMed
概括

小气道疾病 (SAD) 预测慢性阻塞性肺病 (COPD) 中的肺气进展. 通过CT扫描识别的特定亚型 (fSAD-过渡) 显示出快速的肺气发育,即使在没有螺旋计定义的COPD的个体中也是如此.

关键词:
慢性阻塞性肺病 (COPD) 是一种慢性阻塞性肺病.功能性小气道疾病 功能性小气道疾病参数响应映射对参数响应进行映射

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科学领域:

  • 肺部医学 肺部医学
  • 放射学 放射学是一门学科.
  • 医学成像分析 医学成像分析

背景情况:

  • 小呼吸道疾病 (SAD) 和肺是慢性阻塞性肺病 (COPD) 的关键组成部分.
  • 由于疾病的异质性,预测COPD的进展是具有挑战性的.
  • 抑郁症是轻度慢性肺炎中气流阻塞的主要原因,也是肺气的前体.

研究的目的:

  • 调查功能性SAD (fSAD) 的基于CT的参数响应映射 (PRM) 的分布是否与肺瘤进展有关.
  • 使用拓 PRM 分析来描述 COPD 进展模式.
  • 根据PRM分类来识别COPD的放射性亚型.

主要方法:

  • 在基线和5年随访期间,对1495名COPDGene患者的胸部CT扫描进行了分析.
  • 对PRM分类的拓分析与时间扫描的空间对齐.
  • K-意味着对受试者进行分类和评估PRM值,肺功能和临床措施的聚类.

主要成果:

  • 确定了三种放射性亚型:肺主导 (ED),fSAD主导 (FD) 和fSAD过渡 (FT).
  • 与FD (-49.9% ± 0.5) 和ED (-33.1% ± 0.4) 相比,FT亚型在第五年表现出最快的局部肺气进展 (-57.5% ± 1.1) .
  • 大约60%的FT受试者被归类为处于风险中的正常螺旋计.

结论:

  • fSAD-过渡 (FT) 亚型可能能够更早地识别患有肺发育风险的个体.
  • 这种亚型可以在尚未满足COPD螺旋计标准的个体中识别.
  • 基于CT的PRM提供了一种方法来描述COPD的进展,并识别有风险的人群.