Siegel Yoel, Mirpuri Tarun
From the *University of Miami, Miller School of Medicine; and †Jackson Memorial Hospital, Miami, FL.
J Comput Assist Tomogr. 2014 Jul-Aug;38(4):586-90. doi: 10.1097/RCT.0000000000000091.
The aim was to assess dynamic and static parameters on routine computed tomography pulmonary angiography (CTPA) that may detect pulmonary hypertension (PH).
Fifty patients underwent CTPA and echocardiograms. Twenty-six patients had PH, and 24 patients did not have PH. The following parameters were measured on CTPA: density of the pulmonary artery (PA), ratio between the density in the PA and the thoracic aorta (TA), the time between the start of contrast injection to the time the scan trigger density was reached, and PA diameter.
All measured parameters showed significant correlation with PH detected by echocardiogram. The best combination of parameters for detection of PH was contrast density ratio between PA and thoracic aorta of greater than or equal to 1.5 and/or a time to scan trigger of greater than or equal to 8 seconds.
The parameters measured correlate well with PH by echocardiography. This suggests that CTPA can potentially be used to detect PH.
评估常规胸部计算机断层扫描肺动脉造影（CTPA）上可能检测出肺动脉高压（PH）的动态和静态参数。
50例患者接受了CTPA和超声心动图检查。26例患者患有PH，24例患者未患PH。在CTPA上测量以下参数：肺动脉（PA）密度、PA与胸主动脉（TA）密度之比、从开始注射造影剂到达到扫描触发密度的时间以及PA直径。
所有测量参数均与超声心动图检测出的PH显著相关。检测PH的最佳参数组合是PA与胸主动脉的造影剂密度比大于或等于1.5和/或扫描触发时间大于或等于8秒。
所测量的参数与超声心动图检测出的PH相关性良好。这表明CTPA有可能用于检测PH。
