Ascha Mona, Renapurkar Rahul D, Tonelli Adriano R
Department of Pulmonary, Allergy and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, Cleveland, OH, USA.
Department of Diagnostic Radiology, Cleveland Clinic, Cleveland, OH, USA.
Ann Thorac Med. 2017 Apr-Jun;12(2):61-73. doi: 10.4103/1817-1737.203742.
Pulmonary hypertension (PH) is defined as resting mean pulmonary artery pressure ≥25 mmHg measured by right heart catheterization. PH is a progressive, life-threatening disease with a variety of etiologies. Swift and accurate diagnosis of PH and appropriate classification in etiologic group will allow for earlier treatment and improved outcomes. A number of imaging tools are utilized in the evaluation of PH, such as chest X-ray, computed tomography (CT), ventilation/perfusion (V/Q) scan, and cardiac magnetic resonance imaging. Newer imaging tools such as dual-energy CT and single-photon emission computed tomography/computed tomography V/Q scanning have also emerged; however, their place in the diagnostic evaluation of PH remains to be determined. In general, each imaging technique provides incremental information, with varying degrees of sensitivity and specificity, which helps suspect the presence and identify the etiology of PH. The present study aims to provide a comprehensive review of the utility, advantages, and shortcomings of the imaging modalities that may be used to evaluate patients with PH.
肺动脉高压（PH）定义为通过右心导管测量的静息平均肺动脉压≥25mmHg。PH是一种具有多种病因的进行性、危及生命的疾病。对PH进行快速准确的诊断并在病因组中进行适当分类，将有助于早期治疗并改善预后。在PH评估中会使用多种成像工具，如胸部X线、计算机断层扫描（CT）、通气/灌注（V/Q）扫描和心脏磁共振成像。双能CT和单光子发射计算机断层扫描/计算机断层扫描V/Q扫描等更新的成像工具也已出现；然而，它们在PH诊断评估中的地位仍有待确定。一般来说，每种成像技术都能提供额外信息，具有不同程度的敏感性和特异性，这有助于怀疑PH的存在并确定其病因。本研究旨在全面综述可用于评估PH患者的成像模式的效用、优点和缺点。
