MSCT增强扫描不同注射速率和穿刺针对造影剂外渗的影响

The influence of different injection speed and puncture needles on the exosmosis of contrast media in enhanced scanning by MSCT

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。

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 l ml/s≤speed 〈 3ml/s; injection speed for angiogra- phy 3 ml/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. Re- suits ： 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 exosmo- sis of contrast media, increase the successful rate and quality of diagnosis when enhanced scanning is performed.