超小剂量对比剂团注测试进行肺动脉CT成像的可行性研究
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摘要
目的探讨肺动脉CT成像中使用超小剂量对比剂团注测试法的可行性。方法试验组(A组)小剂量团注测试对比剂剂量使用5ml,对照组(B组)小剂量团注测试对比剂剂量使用10ml,测试后2组均注入20ml对比剂及30ml生理盐水进行肺动脉成像,然后分别测量A组与B组的肺动脉主干、上腔静脉及左心房的平均CT值,分析A、B两组数据有无统计学差异。结果 A、B两组肺动脉主干、上腔静脉、左心房平均CT值无统计学差异。结论小剂量对比剂团注测试进行肺动脉CT成像中,减少测试对比剂剂量是可行的。
Objective To evaluate the feasibility of ultra-low dose contrast agent bolus injection during CT pulmonary artery angiography. Methods In interventional group(Group A), 5 ml contrast agent bolus injection was used; while in control group(Group B), 10 ml contrast agent bolus injection was applied. After bolus injection, participants in each group received 20 ml contrast agent combined with 30 ml saline and subsequent pulmonary artery angiography. The mean CT value was measured on main pulmonary artery, superior vena cava and left atrium, and compared between Group A and Group B. Results No statistically significant differences were demonstrated on main pulmonary artery, superior vena cava and left atrium between the two groups. Conclusion Reducing testing contrast agent is clinically feasible in CT pulmonary artery angiography by means of ultra-low dose contrast agent bolus injection.
Objective To evaluate the feasibility of ultra-low dose contrast agent bolus injection during CT pulmonary artery angiography. Methods In interventional group(Group A), 5 ml contrast agent bolus injection was used; while in control group(Group B), 10 ml contrast agent bolus injection was applied. After bolus injection, participants in each group received 20 ml contrast agent combined with 30 ml saline and subsequent pulmonary artery angiography. The mean CT value was measured on main pulmonary artery, superior vena cava and left atrium, and compared between Group A and Group B. Results No statistically significant differences were demonstrated on main pulmonary artery, superior vena cava and left atrium between the two groups. Conclusion Reducing testing contrast agent is clinically feasible in CT pulmonary artery angiography by means of ultra-low dose contrast agent bolus injection.
引文
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[2] 高维青,陶晓峰,朱凌,等.低对比剂用量和小剂量测试技术对肺动脉图像质量的影响[J].医疗卫生装备,2016,37(5):69-74.
[3] 穆晶伟,钱萍艳,华妙强.大螺距扫描应用小剂量对比剂团注测试在肺动脉成像中的应用[J].医疗装备,2016,29(23):62-63.
[4] 侯金玲,高立栋,赵颖.大螺距小剂量团注测试技术与团注对比剂跟踪技术在双源CT肺动脉成像中的应用价值[J].医疗装备,2016,29(23):5-6.
[5] 王益钢,丁建平,姜诤,等.小剂量对比剂团注测试在CT肺动脉成像中的应用[J].医学影像学杂志,2013,23(5):690-693.
[6] Bac KT.Intravenous contrast medium administration and scantiming at CT:considerations and approaches [J].Radiology,2010,256(1):32-61.
[7] Fleischmann D.CT angiography:injection and acquisition technique [J].Radiol Clin North Am,2010,48(2):237-247.
[8] 顾庆春,薛春华,李健,等.多层螺旋CT肺动脉成像中对比剂剂量使用固定值的可行性研究[J].临床放射学杂志,2016,35(2):293-295.