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在急性肺栓塞和慢性血栓栓塞性肺高血压中进行定量性肺 perfusion
Jacob V Hansen1,2, Mette W Poulsen1,2, Jens E Nielsen-Kudsk1,2
1Department of Cardiology Aarhus University Hospital Aarhus N Denmark.
双能量CTPA (DE-CTPA) 在急性肺栓塞 (PE) 患者中显示较低的肺 perfusion 血液体积,与慢性血栓栓塞性肺高血压 (CTEPH) 患者相比. 这些定量输液变量可能有助于区分PE和CTEPH.
科学领域:
- 放射学 放射学是一门学科.
- 心血管成像 - 心血管成像
- 肺部医学 肺部医学
背景情况:
- 目前的计算机断层扫描肺血管造影 (CTPA) 方法用于输液量化通常是半定量的,需要经验丰富的评估人员.
- 来自CTPA的绝对定量变量很少被报告,结果各不相同.
- 双能量CTPA (DE-CTPA) 提供了基于机器学习的肺部和叶片输液的自动量化.
研究的目的:
- 为了评估急性肺栓塞 (PE) 和慢性血栓栓塞性肺高血压 (CTEPH) 患者之间DE-CTPA衍生的定量 perfusion 变量的差异.
- 评估定量 perfusion 变量在区分 PE 与 CTEPH 中的有用性.
主要方法:
- 追溯性,单一中心,对162名成年患者 (81名PE,81名CTEPH) 的观察性研究,在2020-2023年期间用DE-CT扫描.
- 使用曼·惠特尼U测试和方程变异分析 (PERMANOVA) 的比较分析.
- 后勤回归和ROC曲线分析以评估差异化能力.
主要成果:
- 在PE患者中,全肺 perfusion 血液体积显著较低 (中位数为3399 mL),而不是在CTEPH患者中 (中位数为4094 mL) (p < 0.001).
- 在单个肺和叶片水平上也观察到较低的 perfusion 血液体积.
- 佩尔曼诺瓦在两组 perfusion 变量之间显示出显著差异 (p = 0.002).
- 右和左下叶输液血液体积显示出适度的能力,以区分PE从CTEPH (AUC0.71-0.72).
结论:
- 与CTEPH相比,肺 perfusion 血液体积在PE患者中明显较低.
- 由DE-CTPA衍生的定量 perfusion 变量显示出在急性PE和CTEPH之间进行区分的潜力.
- 定量输液分析可能提供一种更客观的方法来诊断和区分这些疾病.
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