Methods: 216 intravenous cannulas were used in the pediatric enhanced spiral CT scanning combinded with high pressure syringe,214 cases was used scalp acupuncures.

• 方法:对216例应用套管针和214例应用带翼头皮针配合高压注射器进行螺旋CT扫描中造影剂外渗情况、检查前重新穿刺等情况进行比较。