64排螺旋CT低剂量对比剂在CT肺动脉血管造影检查中应用的可行性分析  

Feasibility Analysis of 64-slice Spiral CT Low-dose Contrast Agent in CT Pulmonary Angiography

作　　者：李帅 LI Shuai(Department of Radiology,First People's Hospital of Heishan County,Jinzhou 121400,China)

机构地区：[1]辽宁省锦州市黑山县第一人民医院放射科,辽宁锦州121400

出　　处：《中国医药指南》2021年第24期57-58,共2页Guide of China Medicine

摘　　要：目的分析64排螺旋CT低剂量对比剂在CT肺动脉血管造影检查中应用的可行性。方法随机选取我院2016年6月至2019年7月收治的临床怀疑为肺动脉栓塞的患者共100例,分为研究组和对照组两组,每组50例,研究组患者在进行造影检查的过程中主要使用30 mL对比剂加以检查,而常规剂量组主要使用70 mL对比剂进行检查。对两组患者肺血管强化CT值和信噪比以及主观图像质量评分、不良反应发生情况进行对比分析,同时对两组肺栓塞的灵敏度和特异度以及误诊率进行分析。结果研究组患者的肺静脉血管强化CT数值明显要比对照组患者高,差异有统计学意义(P<0.05);研究组患者不良反应发生率为12.00%,对照组患者的不良反应发生率为44.00%,差异有统计学意义(P<0.05)。两组肺栓塞的灵敏度和特异度以及误诊率比较,差异无统计学意义(P>0.05)。研究组和对照组患者的左肺静脉脉CT值和右肺静脉脉CT值比较,差异有统计学意义(P<0.05)。结论在怀疑为肺动脉栓塞的患者中使用64排螺旋CT低剂量对比剂检查能够满足患者的临床诊断需要,同时图像质量、敏感度和特异度方面和常规剂量检查结果之间的差异不显著,患者的不良反应发生率较低。Objective The feasibility of 64-slice spiral CT low-dose contrast agent in CT pulmonary angiography was analyzed.Methods A total of 100 patients with suspected pulmonary embolism treated in our hospital from June 2016 to July 2019 were randomly selected and divided into study group and control group,50 cases in each group.During the course of angiographic examination,the study group mainly used 30 mL contrast agent,while the conventional dose group mainly used 70 mL contrast agent.To observe and compare the enhanced CT value and signal-to-noise ratio of pulmonary vessels,subjective image quality score and adverse reactions of the two groups,and to analyze the sensitivity,specificity and misdiagnosis rate of pulmonary embolism in the two groups.Results The value of pulmonary vein enhanced CT in the study group was significantly higher than that in the control group,there was a significant difference between the two groups(P<0.05).The rate of adverse reactions in the study group was 12.00%,and that in the control group was44.00%,there was a significant difference between the two groups(P<0.05).There was no significant difference in sensitivity,specificity and misdiagnosis rate of pulmonary embolism between the two groups(P>0.05).There was significant difference in CT value of left pulmonary vein and right pulmonary vein between the study group and the control group(P<0.05).Conclusion The low-dose contrast agent of 64-slice spiral CT can effectively meet the clinical diagnosis needs of patients suspected of pulmonary embolism.At the same time,there is no significant difference between the results of conventional dose and image quality,sensitivity and specificity.The incidence of adverse reactions of patients is low,and the clinical application phase is low.

关 键 词：影像诊断学 64排螺旋 CT低剂量对比剂 CT肺动脉血管 造影检查 可行性分析 

分 类 号：R445[医药卫生—影像医学与核医学]