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AJRCCM:如何使用动态胸片诊断肺动脉高压?

2021-10-15 刘少飞 MedSci原创

一名 46 岁女性和一名 21 岁女性疑似肺动脉高压被转诊到九州大学附属医院。对每位患者进行动态胸片 (DCR) 和常规胸片。胸片显示没有明显差异,表明两名患者之间存在不同的肺动脉高压原因。然而,从

一名 46 岁女性和一名 21 岁女性疑似肺动脉高压被转诊到九州大学附属医院。对每位患者进行动态胸片 (DCR) 和常规胸片。胸片显示没有明显差异,表明两名患者之间存在不同的肺动脉高压原因。然而,从 DCR 获得的肺灌注图像揭示了它们之间肺动脉高压的不同病因。 46 岁女性的灌注图像显示左肺和右肺野中存在大的三角形灌注缺损,提示中央肺血栓栓塞,而 21 岁女性的灌注图像显示均匀的肺灌注无缺损。这些发现类似于在随后的肺灌注闪烁扫描中获得的结果。
两名患者均通过右心导管检查诊断出肺动脉高压。最后,46 岁患者被诊断为中心型慢性血栓栓塞性肺动脉高压(CTEPH),21 岁患者因房间隔缺损被诊断为肺动脉高压(PAH)。

DCR 是一种由平板探测器和脉冲 X 射线发生器捕获的胸部的新型电影放射照相技术。 捕获肺灌注图像需要屏气 7 秒,成像不需要造影剂和放射性核素。 使用软件的后处理可视化 x 射线半透明的时间变化,代表由于心脏泵血引起的肺循环变化。 这是CTEPH和PAH在DCR上的区别的第一次演示。

胸片显示 46 岁中心型慢性血栓栓塞性肺动脉高压 (CTEPH) 女性心脏肥大 (A) 和 21 岁肺动脉高压 (PAH) 女性双侧肺动脉扩大 ) (B),但没有明显差异表明存在不同原因的肺动脉高压。 另一方面,在 CTEPH 患者的动态胸片 (C) 和灌注闪烁扫描 (E) 的灌注图像中观察到多个大的三角形灌注缺损,表明中心性肺血栓栓塞,而双侧均匀灌注(D 和 F) PAH 患者。

 

文章出处:

Yamasaki Y, Kamitani T, Abe K, Hosokawa K, Sagiyama K, Hida T, Matsuura Y, Kitamura Y, Maruoka Y, Isoda T, Baba S, Yoshikawa H, Kuramoto T, Yabuuchi H, Ishigami K. Diagnosis of Pulmonary Hypertension Using Dynamic Chest Radiography. Am J Respir Crit Care Med. 2021 Jun 8. doi: 10.1164/rccm.202102-0387IM. Epub ahead of print. PMID: 34102086.

 

 

 

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    2022-08-03 isabellayj
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    2021-10-17 hukaixun

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