Application on different contrast media concentration in the pancreatic CT angiography scanning

Abstract

Objective To compare the effects of the different contrast media concentration on the visualization of pancreatic arteries using 64-Detector Spiral CT. Methods 120 cases who underwent abdominal enhancement CT scanning were randomly divided into group A ( n = 60) and B ( n = 60). The contrast media concentration was 300 mgI/ml for group A and 370 mgI/ml for group B respectively, both groups shared the same contrast media dose algorithm and injection speed, with 0.5 gI/kg body weight and 4 ml/s respectively. Reformating the pancreatic arteries via MIP (maximum intensity projection), VR (volume rendering) and MPR (multi-planar reconstruction). Results The CT value of the abdominal aortic celiac opening of group B is significantly higher than A ( P < 0.01). The visualization scores of pancreatic arteriesin Group B are significantly higher than A ( P < 0.05). The visualization ratios of pancreatic arteriesin Group Bare higher than A, the differences of AIPDA、PIPDA、DPA、TPA、PMA、CPA between the 2 Groups have statistically significant ( P < 0.05). Conclusion Pancreatic arteries could have a better visualization by using 370 mgI/ml contrast media in pancreatic artery scanning. 摘要： 目的 比较不同浓度对比剂在 64 排螺旋 CT 胰腺动脉检查中的显示效果。 方法 将本院 120 例行腹部增强 CT 检查的患者随机分成 A、B 两组, 每组各 60 例, 分别注射 300 mgI/ml (A组) 和 370 mgI/ml (B组) 2 种浓度对比剂, 对比剂用量算法及注射速度两组一致, 分别为 0.5 gI/kg 体重和 4 ml/s。利用 MIP(最大密度投影)、VR(容积重现技 术)、MPR(多平面重组)等技术来显示胰腺动脉。 结果 B 组腹主动脉腹腔干开口处强化 CT 值明显高于 A 组, 差异 具有统计学意义 ( P < 0.01)。B 组各胰腺动脉显示评分均明显高于 A 组, 差异具有统计学意义( P < 0.05)。B 组各胰腺动脉显示率均高于 A 组, 其中 AIPDA、PIPDA、DPA、TPA、PMA、CPA 的差异具有统计学意义 ( P < 0.05)。 结论 当注射 370 mgI/ml 对比剂检查胰腺动脉时, 胰腺各动脉可获得较好的显示。