Abstract：Objective: By comparing the image quality of the inferior vena cava (IVC) direct CT venography (CTV) using multi-slice computed tomography (MSCT), under different contrast medium injection concentrations,delay scan times conditions, to obtain optimal contrast medium injection way. Methods: Using 64-detector row scanner (Sensation 64; Siemens), 56 patients who were suspected of inferior vena cava diseases underwent IVC direct CTV examination, Randomly divided into 8 groups. At the same conditions of contrast medium rate(3.5~4.0mL/s), liquid volume (unilateral liquid volume 200mL), delay scan time (30s), the contrast medium concentrations of each group were 1:2、1:4、1:6、1:9, compare the image quality of the four groups. At the same conditions of contrast medium rate(3.5~4.0mL/s), contrast medium concentrations(1:4~1:6), liquid volume (unilateral liquid volume 200mL), dual phase scan, the firs phase delayed scan time of the four experimental groups were 20s、25s、30s、35s respectively, after 20s scan repeatedly. Collecting 25s、30s、35s、40s、45s imaging data, then compare the image quality. Result: The image quality of the four contrast medium concentration groups are not all the same (H＝19.727, P<0.001),1:4~1:6 groups is better than others;The image quality of delay scan times is not all the same (H＝22.262, P<0.001), 30s~40s phases is the best. Conclusion: IVC direct CTV using MSCT is feasible, at the same conditions of contrast medium rate (3.5~4.0mL/s), liquid volume (unilateral liquid volume 200mL), the best concentration is 1:4~1:6, the best delay scan time is 30s~40s.It can obtain better image quality and be used to diagnose the IVC diseases.
曹宏伟, 邢媛媛, 仇恒志, 万立野, 曹振东, 白雪冬, 吴薇娜. 多排螺旋CT直接法下腔静脉CTV成像造影剂注射方案的研究及临床意义[J]. 河北医学, 2018, 24(1): 73-77.
CAO Hongwei, XING Yuanyuan, CHOU Hengzhi, et al. The study and clinical significance of contrast medium injection way of direct inferior vena cava CTV by multi-slice CT. HeBei Med, 2018, 24(1): 73-77.
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2018, Vol. 24 
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