【摘要】 目的:探讨MSCT增强扫描不同注射速率和穿刺针对造影剂外渗的影响。方法:将平扫后需增强的150例患者按照单双日选择不同种类穿刺针(单日使用螺旋头皮针20G,双日使用套管针20G)和不同注射速率(常规增强速度1ml/s≤速度<3 ml/s;血管成像的注射速度3ml/s≤速度≤5ml/s;灌注成像注射速度5ml/s≤速度<8ml/s)分为两组,观察发生造影剂血管外渗几率。结果:当高速度(3ml/s≤速度≤8ml/s)时,头皮针组更容易引起外渗,与套管针组相比有明显差异,套管针组发生造影剂血管外渗的几率明显小于头皮针组(P<0.05)。结论:MSCT增强扫描时使用套管针可减少造影剂血管外渗,有效提高CT增强的成功率,从而提高疾病诊断质量。更多还原

【Abstract】 Objective: To explore the influence of different injection speed and puncture needles on the exosmosis of contrast media in enhanced scanning by MSCT.Methods: Spiral scalp needle(20G) and trocar(20G) were respectively applied,in different injection speed(general contrast scanning speed 1ml/s≤speed<3ml/s;injection speed for angiography 3ml/s≤speed<5ml/s;injection speed for perfusion imaging 5ml/s≤speed<8ml/s),to 150 patients needed to be given enhanced scanning on odd and even day.The observation was made on odds and exosmosis of contrast media.Results: Spiral scalp needle easily caused exosmosis when injection was in high speed at ≥3ml/s and <8ml/s and odds of exosmosis of contrast media was less when trocar was used(P<0.05).Conclusion: Application of trocar can reduce exosmosis of contrast media,increase the successful rate and quality of diagnosis when enhanced scanning is performed.更多还原