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目的探讨生理盐水冲洗对提高CT血管成像质量的临床价值。方法180例患者随机分为三组(每组60例):A、B组对比剂剂量分别按照1.0ml/kg、1.5ml/kg体重计算;C组比剂剂量按照1.0ml/kg体重计算,另注生理盐水0.5ml/kg体重(注射完对比剂后按照相同速率注入生理盐水进行冲洗)。结果A组、B组、C组重建门静脉赋分为优或良的百分率分别为33.4%、53.3%和58.4%,A组与B组、C组间差异有统计学意义(P*=0.013,P**=0.020),B组与C组间差异无统计学意义(P=0.735)。结论低剂量的对比剂(1.0ml/kg)加生理盐水冲洗可获得与较大剂量对比剂(1.5ml/kg)同等质量的重建图像。
Objective To investigate the clinical value of saline flushing in improving the quality of CT angiography. Methods One hundred and eighty patients were randomly divided into three groups (60 in each group): the dose of contrast agent in groups A and B were calculated according to 1.0ml / kg and 1.5ml / kg body weight respectively; the dose of group C was 1.0ml / kg body weight, Another injection of saline 0.5ml / kg body weight (injection of contrast agent after the same rate of saline injection flushing). Results The scores of excellent or good points in group A, group B and group C were 33.4%, 53.3% and 58.4%, respectively. There was significant difference between group A and group B and group C (P * = 0.013, P ** = 0.020). There was no significant difference between group B and group C (P = 0.735). CONCLUSIONS Low dose contrast media (1.0 ml / kg) plus saline flush resulted in reconstructed images of the same quality as the larger dose contrast agent (1.5 ml / kg).