|
|
|
| The study and clinical significance of contrast medium injection way of direct inferior vena cava CTV by multi-slice CT |
| CAO Hongwei, XING Yuanyuan, CHOU Hengzhi, et al |
| Chengde Medical College Affiliated Hospital Radiology-department, Hebei Chengde 067000, China |
|
|
|
|
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.
|
|
|
|
|
|
[1] Lu X, Yang C, Xu K, et al. Magnetic resonance venography in the diagnosis of inferior venacava obstruction in Budd-Chiari syndrome[J].European Review for Medical & Pharmacological Sciences, 2015, 19(2): 256~264
[2] 汤波,余朝文,唐文波.肝静脉下腔静脉CTV成像在布加综合征诊断与治疗方式选择中的价值[J].中国普通外科杂志,2016,25(1):143~146.
[3] Hadidi MT, Badran DH, Ghaida J, et al. Double inferior vena cava detected by CT venography and confirmed by magnetic resonance venography: Embryogenesis and literature review[J].International Journal of Morphology, 2016, 34(3): 1087~1091.
[4] 郑金龙,韩萍,柳曦,等.下腔静脉病变的螺旋CT诊断[J].实用放射学杂志,2009,25(2):255~258.
[5] 张传臣,张兆琪,赵轶轲,等.320排螺旋CT直接法下腔静脉成像[J].中国医学影像技术,2012,28(1):117~120.
[6] 董涛.多层螺旋CT及MRI对下腔静脉病变的诊断价值分析[J].中国CT和MRI杂志,2015,13(7):92~94.
[7] Baskaran S, Jean WK, Jadranka S, et al. Thoracic central venous evaluation: Comparison of first-pass directversus delayed-phase indirect multi-detector CTvenography[J].Clinical Imaging , 2015, 39(3) : 412~416 .
[8] 赵德明,顾小莺,裴林惠,等.螺旋CT经下肢静脉注射造影剂增强检查参数的研究[J].CT理论与应用研究,2012,21(4):747~752.
[9] 刘军华,费军,张朝利,等.多层螺旋CT在下腔静脉血管造影中的影像学特征[J].医学临床研究,2012,29(6):1166~1168. |
|
|
|
2018, Vol. 24 
