不同浓度对比剂强化效果的对比研究

Comparative study on contrast effect between different concentration media

目的:探讨不同浓度碘类CT对比剂在腹部疾病检查中的强化效果。方法:将248例行腹部CT扫描的患者分为A、B 2组,使用的对比剂为欧乃派克。A组浓度为300mgI/ml,B组浓度为350 mgI/ml。测量动脉期肾动脉分叉水平腹主动脉强化的CT值,评估2组的强化效果。结果:A、B 2组腹主动脉的强化程度差异有统计学意义(P<0.05)。2种浓度对比剂的强化效果差异无统计学意义(P>0.05),对诊断无影响。结论:350 mgI/ml对比剂对血管的强化程度明显优于300 mgI/ml对比剂,但对组织器官的强化效果无差别,完全可以满足诊断需求。

Objective： To compare the contrast effect with different concentration iodine media on abdominal diseases. Methods： Two hundred and eighty six patientswere divided into two groups. The media was Omnipaque, which concentration was 300 mgI/ml in group A and 350 mgI/ml in group B. Contrast enhancement （HU） of aortal at renal artery level was measured. The contrast effect of two groups was evaluated. Results： There were significant statistical differences on contrast enhancement （HU） between the two groups （ P d0.05）, but no significant statistical difference on the contrast effect （ P 〉0.05）, which had no effect on diagnosis. Con- clusion： The contrast enhancement in vessels of high concentration media （350mgI/ml） was much greater than that of the low （300mgI/ml）, but the contrast effect had no difference in different tissues and organs, which can satisfy the diagnosis completely