摘要
目的：采用MSCT不同注射速率、对比剂浓度及准直评价周围肺动脉的显示。方法：收集我院2011年2—10月行胸部增强扫描并符合纳入标准的病例100例，分别按照对比剂浓度及注射速率分为A、B、C、D四组；不同准直即0.6 mm，1.5 mm分为D、E两组；统计学分析肺动脉干、左右肺动脉及4级肺动脉CT值和5、6肺动脉显示率；结果：5组肺动脉干、左右肺动脉及4级肺动脉CT值比较有差异（P<0.05）；4级肺动脉分支显示数目无统计学意义（P=0.19）；5级肺动脉显示率下叶区有统计学差异（P<0.05）；6级肺动脉显示率每个叶区均有统计学差异（P<0.05）；D组与E组比较5级肺动脉显示率无统计学意义（P=0.48），6级肺动脉显示率有差异（P=0.00）。结论：采用0.6 mm准直，浓度350 mgI/mL，注射速率5 mL/s可以显著提高周围肺血管显示率。
Abstract
Objective: To assess visualization of the peripheral pulmonary arteries under different concentration of contrast medium, flow injected rate of iodine and different collimation with MSCT. Methods: One hundred patients who met the inclusion criteria were detected by thoracic enhanced CT scan from February to October 2011 in our hospital. These people were divided into 4 groups（Groups A, B, C, D） according to different concentration contrast medium, flow injected rate of iodine and 2 groups of different collimation(Group D 0.6 mm, Group E 1.5 mm). And statistical analysis of the CT values of pulmonary trunk, left and right pulmonary arteris and the fourth- order arteries. The visualization of the fifth- and sixth- order arteries were measured. Results: The differences of CT values of pulmonary trunk, left and right pulmonary arteries and the fourth- order arteries were statistical significance(P<0.05) and there was no statistically significant in the total number of the fourth- order arteries(P=0.19) in the five groups. There were statistical significance in the visualization of fifth- order arteries in lower lobe and sixth- order arteries in each lobe. There was no statistical significance in the visualization of fifth- order arteries(P=0.48) and the opposite conclusion in sixth- order arteries(P=0.00) in group D and group E. Conclusion: Using 0.6 mm collimation, 350 mgI/mL concentration contrast medium and 5 mL/s flow injected rate of iodine in MSCT angiography of the pulmonary arteries can significantly increase visualization of the peripheral pulmonary arteries.
关键词
肺栓塞 /
肺动脉 /
体层摄影术 /
螺旋计算机
Key words
Pulmonary embolism /
Pulmonary artery /
Tomography /
spiral computed
李芸芝;王 刚;周怀琪;张 皓;王 浩;卢星如;包海荣;田志勇.
MSCT肺动脉成像不同参数对周围肺动脉显示率的对比研究[J]. 中国临床医学影像杂志. 2012, 23(9): 630-634
LI Yun-zhi;WANG Gang;ZHOU Huai-qi;ZHANG Hao;WANG Hao;LU Xing-ru;BAO Hai-rong;TIAN Zhi-yong.
Compare visualization of the peripheral pulmonary arteries of different parameters withMSCT angiography of the pulmonary arteries[J]. Journal of China Clinic Medical Imaging. 2012, 23(9): 630-634
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