1 Department of Radiology, Sligo Regional Hospital, The Mall, Sligo, Ireland.
AJR Am J Roentgenol. 2014 Jan;202(1):60-4. doi: 10.2214/AJR.12.9917.
The aim of this study was to quantitatively and qualitatively evaluate pulmonary 64-MDCT angiography image quality in pregnancy and puerperium, compared with female nonpregnant control subjects.
The study group comprised 124 consecutive pregnant and postpartum women and 124 female nonpregnant control subjects who presented with suspected pulmonary embolism. The individual studies were evaluated for subjective and objective diagnostic quality.
Objective measurements of the arterial enhancement in the pulmonary trunk and left and right pulmonary arteries found that there was no statistically significant difference in attenuation values between the pregnant and puerperium group and the control group for pulmonary artery opacification. The mean attenuation in the pulmonary trunk was 270.54 HU in the pregnant group, 277.53 HU in the puerperium group, and 293.90 HU in the control group.
We found no significant difference in diagnostic quality of pulmonary CT angiography using MDCT between the study and control groups. The use of MDCT acquisition, faster injection rates, higher contrast medium concentration, and higher trigger levels may decrease the number of nondiagnostic studies in this population. MDCT may be a worthwhile investigation in the majority of pregnant patients with suspected pulmonary embolism.
本研究旨在定量和定性评估妊娠和产褥期肺部 64-MDCT 血管造影图像质量，并与女性非妊娠对照组进行比较。
研究组包括 124 例连续的妊娠和产后女性以及 124 例疑似患有肺栓塞的女性非妊娠对照组。对个体研究进行主观和客观诊断质量评估。
对肺动脉主干和左、右肺动脉的动脉增强进行客观测量，发现肺动脉显影的衰减值在妊娠和产褥期组与对照组之间无统计学差异。在妊娠组中，肺动脉主干的平均衰减值为 270.54 HU，在产褥期组中为 277.53 HU，在对照组中为 293.90 HU。
我们发现，使用 MDCT 进行肺部 CT 血管造影的诊断质量在研究组和对照组之间没有显著差异。使用 MDCT 采集、更快的注射速度、更高的对比剂浓度和更高的触发水平可能会减少该人群中不可诊断的研究数量。对于大多数怀疑患有肺栓塞的妊娠患者，MDCT 可能是一种有价值的检查方法。
