多层螺旋CT胰腺检查:两种注射条件对增强效果的影响研究  

Multislice spiral CT in pancreas examination: study on the effects of contrast enhancement with two injection conditions of contrast material

作　　者：李卉[1] 曾蒙苏[1] 周康荣[1] 张利军[1] 缪熙音[1] 陈刚[1] 陆秀良[1] 

机构地区：[1]复旦大学附属中山医院放射科上海市影像医学研究所,上海200032

出　　处：《中华放射学杂志》2004年第12期1260-1264,共5页Chinese Journal of Radiology

摘　　要：目的　探讨多层螺旋CT(MSCT)胰腺检查方案中 ,2种注射条件对增强效果的影响。方法　 4 0例无胰腺疾病患者 ,用抽签法将其随机分为 2组 ,每组各 2 0例。A组注射条件为 :对比剂总量为 12 0ml,注射流率为 5ml/s;B组注射条件为 :对比剂总量为 90ml,注射流率为 3ml/s。分别行平扫及胰腺三期 (包括动脉期、胰腺期及肝脏期 )增强扫描 ,比较两组间胰腺期胰腺实质强化程度、胰周主要血管的显示率及显示程度 (根据血管显示的清晰程度评为 0～ 3分 )。结果　A组胰腺期胰腺实质强化程度明显高于B组 (t=3 5 9,P <0 0 1) ,胰周大血管 (动脉指腹腔动脉、肝动脉、脾动脉及肠系膜上动脉 ,静脉指门静脉、脾静脉及肠系膜上静脉 )的显示率 ,A组及B组均为 10 0 % ;胰周其他主要血管(动脉包括胃十二指肠动脉及胰十二指肠前上、后上、前下、后下动脉 ,静脉包括胃结肠干及胰十二指肠前上、后上静脉 )的显示率 ,A组为 5 0 %～ 10 0 % ,B组为 10 %～ 95 % ,两组间差异有显著性意义 (χ2=2 6 2 7,P =0 0 0 )。胰周大血管及胰周其他主要血管的显示程度 ,A组各血管平均评分值分别为2 93～ 3 0 0与 0 6 0～ 2 80 ,B组分别为 2 33～ 2 80与 0 0 7～ 1 5 3,两组间差异均有显著性意义(U =0 0 0及 12 5 0 ,P =0 0 0及 0 0 4 )Objective To assess the effects of the intravenous injection rate and dose of contrast material on pancreatic parenchyma and peripancreatic vessel enhancement using multislice spiral CT Methods Forty patients without pancreatic disease were divided randomly into group A ( n =20) and B ( n =20) The injection rate was 5 ml/s for group A and 3 ml/s for group B, and the injection dose was 120 ml for group A and 90 ml for group B All patients underwent non enhanced and triple phase (including arterial phase, pancreatic phase, and liver phase) enhanced scanning The enhancement of pancreatic parenchyma at pancreatic phase was compared between the two groups, and the comparison of display rate and degree of peripancreatic blood vessels was done as well The display degree of vessels was evaluated using a 0～3 point scale Results The pancreatic enhancement of group A was superior to that of group B ( t =3 59, P <0 01) The display rate of peripancreatic big arteries (i e CA, HA, SA, and SMA) and veins (i e PV, SV, and SMV) was 100% for both group A and B The difference of display rate for other major peripancreatic vessels (i e GDA, ASPDA, PSPDA, AIPDA, PIPDA, GCT, ASPDV, and PSPDV) between group A (50%-100%)and group B (10%-95%) was statistically significant (χ 2=26 27, P =0 00) The average value for the display degree of peripancreatic big vessels and the other major peripancreatic vessels was 2 93-3 00 and 0 60-2 80 in group A, and 2 33-2 80 and 0 07-1 53 in group B, respectively There was also a significant difference ( U =0 00 & 12 50, P =0 00 & 0 04) between group A and B for the display degree of peripancreatic big vessels, as well as the other major peripancreatic vessels Conclusion It is considered that 5 ml/s and 120 ml for injection rate and dose of contrast material in pancreas examination on multislice spiral CT is an optimized protocol, which helps the small lesion detection and improves the judgement accuracy of peripancreatic vascular in

关 键 词：胰腺 注射流率 对比剂 血管 显示率 多层螺旋CT MSCT 清晰 显著性 随机 

分 类 号：R816.5[医药卫生—放射医学]