摘要
目的:初步探讨宽体探测器CT冠脉联合头颈部及主动脉CT血管成像(CT angiography,CTA)"一站式"扫描的应用价值。方法:分析80例患者CTA资料,分为A组(n=40)和B组(n=40)。A组临床怀疑主动脉夹层行主动脉CTA成像,疑心脑血管累及后再次行心脑血管联合成像,B组行冠脉CTA联合头颈部及主动脉CTA"一站式"检查,对2组扫描获得的图像进行主观评价及客观评价,比较两组的图像质量、对比剂用量、辐射剂量及检查耗时。结果:2组患者的年龄、性别、心率、体质量指数(body mass index,BMI)及辐射剂量差异无统计学意义(P>0.05),2组患者的图像质量均可满足诊断需求,图像主观评分差异无统计学意义(P>0.05),大脑中动脉M1段、颈总动脉、椎动脉V4段、右冠状动脉、左前降支、左旋支、主动脉根部、降主动脉、腹主动脉、髂总动脉的CT值、对比噪声比(contrast nosie ratio,CNR)差异无统计学意义(P>0.05)。B组对比剂使用量较A组减少约45%,检查耗时较A组减少约52%,2组比较差异具有统计学意义(P<0.05)。结论:宽体探测器CT"一站式"联合扫描,可同时获得满足临床诊断需求的冠脉、头颈及主动脉血管图像,操作简便,耗时短,对比剂用量少,在主动脉夹层患者术前评估中具有一定的临床应用价值。
Objective:To investigate the application value of "one-stop"scanning combined CT angiography(CTA)for coronary and head-neck arteries and aorta with wide detector CT. Methods:Images of 80 patients who underwent CTA scans were analyzed. These patients were divided into 2 groups:Group A(n=40)and Group B(n=40). Separate contrast injection protocol for aortic CTA with suspected aorta dissection and combined head-neck and coronary CTA for suspected cardiovascular disease were carried out on Group A. One-stop scan for combined coronary,head-neck and aortic CTA scans were carried out on Group B. Subjective evaluation and objective evaluation were performed for both two groups. Image quality,contrast dose,radiation dose,the total scan time between the two groups were compared. Results:There was no statistic difference in age,gender,heart rate,BMI and radiation dose between the two groups(P>0.05). There was no statistic difference in subjective evaluation(P>0.05)and image quality in both groups met the requirement of diagnosis. There was no statistic difference in CT value and contrast nosie ratio(CNR)among M1 segment of the middle cerebral artery,common carotid artery,vertebral artery V4 segment,RCA,LAD,LCX,aortic root,descending aorta,abdominal aorta and common iliac artery(P>0.05). However,there were statistically significant differences in contrast dose and scan time between the two groups(P<0.05). Compared with Group A,the contrast dose and scan time reduced 45% and 52%,respectively,in Group B.Conclusion:Wide-detector CT can provide the "one-stop"examination for coronary,head-neck and aortic arteries with single contrast injection to obtain equivalent image quality as the conventional dual-injection protocol with reduced contrast dose and examination time. It is useful for preoperative evaluation of patients with aortic dissection.
作者
帅桃
游永春
李万江
廖凯
李真林
Shuai Tao;You Yongchun;Li Wanjing;Liao Kai;Li Zhenlin(Radiology Department,West China Hospital of Sichuan University)
出处
《重庆医科大学学报》
CAS
CSCD
北大核心
2019年第10期1323-1326,共4页
Journal of Chongqing Medical University
基金
四川大学华西医院学科卓越发展1.3.5工程资助项目（编号：ZYGD18019）
关键词
计算机断层
冠状动脉
头颈血管
主动脉血管
computed tomography
coronary artery
head-neck artery
aortic vessels
