摘要
目的 :研究不同扫描参数对胰腺电子计算机体层扫描 (CT)增强的影响 ,以得出合适的扫描方案。方法 :1预试验 10例 ,按 1.5 ml/ kg、3ml/ s注射造影剂 (Omnipaque 30 0 mg I/ m l)行胰腺薄层三期扫描 ,动脉期、胰腺期及门脉期的延迟时间各为 18s、40 s、70 s,分别测量平均胰腺 CT增强值并作比较。2将 40例患者按不同剂量和注射速度随机分成 4组 , 组 (1.5 ml/ kg、3.0ml/ s) , 组 (1.5 ml/ kg、2 .5 m l/ s) , 组 (1.0 ml/ kg、3.0 m l/ s) , 组 (1.0 ml/ kg、2 .5 ml/ s)每组各 10例 ,分别行胰腺期、门脉期扫描 ,分别测量平均胰腺 CT增强值并作比较。结果 :预试验中发现平均胰腺 CT增强值 ,胰腺期 [(6 9.5 6± 10 .6 ) Hu]比动脉期[(2 4.81± 14.98) Hu]高 (P<0 .0 5 ) ,胰腺期 [(6 9.5 6± 10 .6 ) Hu]比门脉期 [(5 4.38± 10 .34 ) Hu]高 (P<0 .0 5 )。40例对照研究中 ,胰腺期平均胰腺 CT增强值 : 组为 (71.0 5± 9.6 4) Hu, 组为 (6 2 .2 7± 12 .2 9) Hu, 组为 (42 .3± 11.75 ) Hu, 组为(44 .16± 11.2 7) Hu、 组与 组相比 (P<0 .0 5 )、 组与 组相比 (P<0 .0 5 )。 组与 组、 组与 组相比无明显差异。结论 :平均胰腺实质增强胰腺期比动脉期、门脉期好 ,以 1.5 ml/ kg剂量 ,2 .5～ 3.0 m l/ s?
Objective:To assess the effects of different scanning parameters on pancreatic enhancement CT and to find an appropriate protocols for examining the pancreas. Methods:①Ten patients were injected by 1.5 ml/kg of contrast material (Omnipaque 300 mg I/ml) and the injection rate was 3 ml/s. Scanning parameters of arterial phase, pancreatic phase and portal venous phase, were obtained 18s, 40 s and 70 s later respectively. Mean CT enhancement values of pancreas of above three phases were measured. ②Forty patients were randomly divided into four groups with different injection rates and doses. Group Ⅰ(1.5 ml/kg, 3 ml/s), Group Ⅱ(1.5 ml/kg, 2.5 ml/s), Group Ⅲ(1 ml/kg, 3 ml/s) and group Ⅳ(1 ml/kg, 2.5 ml/s), had ten cases each. Mean CT enhancement values of pancreas in four groups were obtained. Results: In the pre test, mean pancreatic enhancement value was significantly greater in the pancreatic phase [(69.16±10.6) Hu] than both in arterial phase [(24.81±14.98) Hu, P<0.05 ] and portal venous phase [(54.38±10.34) Hu, P<0.05 ]。Mean CT enhancement values of pancreas in pancreatic phase was (71.05±9.64) Hu in Group Ⅰ, (62.27±12.29) Hu in Group Ⅱ, (42.3±11.75) Hu in Group Ⅲ and(44.16±11.27) Hu in Group Ⅳ. There was significant differences in mean pancreatic enhancement value between Group Ⅰ and Group Ⅲ ( P<0.05) and between Group Ⅱ and Group Ⅳ( P<0.05) . There was no significant differences between Group Ⅰ and Group Ⅱ and between Group Ⅲ and Group Ⅳ. Conclusion: Pancreatic enhancement value was significantly greater in the pancreatic phase than both in arterial phase and portal venous phase, 1.5 ml/kg of contrast material, 2.5~3.0 ml/s is an appropriate injection parameter.
出处
《南京医科大学学报（自然科学版）》
CAS
CSCD
北大核心
2001年第3期217-219,共3页
Journal of Nanjing Medical University(Natural Sciences)
基金
江苏省科委社会发展科研基金资助项目 ( BS970 46)
