低管电压、低对比剂CT血管成像技术在颅脑血管性疾病检查中的应用  

Application of CT Angiography with low tube voltage and contrast medium dose in cerebral vascular diseases

作　　者：何晓清[1] 梁汉欢[1] 彭可雨[1] 邹亚毅[1] 阮兵[1] 

机构地区：[1]广东省高州市人民医院影像科,广东高州525200

出　　处：《广东医学院学报》2016年第6期625-628,共4页Journal of Guangdong Medical College

摘　　要：目的探讨"双低"(低管电压、低对比剂用量)CT血管成像(CTA)技术在颅脑血管性疾病检查中可行性。方法 344例疑诊为颅脑血管性疾病患者随机分为双低组和常规组,分别采用管电压80 k V和对比剂量0.8 m L/kg、管电压120 k V和对比剂量1.5 m L/kg进行头部CTA检查。比较两组图像质量的客观和主观评分、信噪比(SNR)、对比噪声比(CNR)、辐射剂量和碘含量。结果两组图像质量的客观和主观评分、SNR和CNR的差异均无统计学意义(P>0.05),双低组患者接受的辐射剂量和碘含量均明显低于常规组(P<0.01)。结论 "双低"CTA技术可用于颅脑血管性疾病检查。Objective To observe the feasibility of CT angiography with low tube voltage and contrast medium dose （double low） in cerebral vascular diseases （CVD）. Methods A total of 344 CVD cases were randomly divided into double low and conventional groups, and underwent cerebral CTA with 80 kV tube voltage and 0.8 mL/kg contrast medium or with 120 kV tube voltage and 1.5 mL/kg contrast medium. Subjective and objective scores, signal to noise ratio（SNR）, and contrast to noise ratio（CNR） of image quality, radiation dose, and iodine content were compared between of two groups. Results Subjective and objective scores, SNR and CNR of image quality were comparable between two groups （P〉0.05）. The radiation dose and iodine content were lower in double low group than in conventional group （P〈0.01）. Gonclusion CTA with double low technique is applicable for CVD.

关 键 词：CT血管成像 辐射剂量 颅脑血管性疾病 

分 类 号：R144.1[医药卫生—公共卫生与预防医学] R323.1