64排CT低剂量扫描技术在甲状腺增强扫描中的价值  

The value of 64 row CT low dose scanning in thyroid enhanced scan

作　　者：卢小爱 孙素[1] 陈博[1] 林锋[1] Lu Xiaoai;Sun Su;Chen Bo;Lin Feng(Department of Radiology,the Second Affiliated Hospital of Wenzhou Medical University,Wenzhou 325000,China)

机构地区：[1]浙江省温州医科大学附属第二医院放射科,325000

出　　处：《中华内分泌外科杂志》2019年第1期44-47,共4页Chinese Journal of Endocrine Surgery

基　　金：温洲市科技计划项目(Y20160593)。

摘　　要：目的探讨64排CT低剂量扫描技术在甲状腺增强扫描中的价值。方法选择2016年1月至2017年12月在温州医科大学附属第二医院进行治疗的152例甲状腺疾病患者作为研究对象,入选患者均行甲状腺多排螺旋CT增强扫描检查及病理检查,依据多排螺旋CT检查的不同电流及电压将患者分为4组(A组为高管电压高管电流,B组为高管电压低管电流,C组为低管电压高管电流,D组为低管电压低管电流)。比较4组受检者多排螺旋CT扫描结果的意义。结果4组多排螺旋CT检查对于结节性甲状腺病变检出率(96.21%、94.38%、85.71%、87.50%)或弥漫性甲状腺病变的检出率(77.78%、83.33%、80.00%、83.33%)比较差异无统计学意义(U=0.1825,P=0.3518>0.05)。4组CTDIvol、DLP、ED测量值比较差异具有统计学意义(P<0.05);D组受检者辐射剂量低于A、C组受检者。4组甲状腺CT值、背景噪声、背景信号差异显著,差异具有统计学意义(P<0.05);D组甲状腺CT值、背景噪声、背景信号均高于A、B、C组(P<0.05);4组受检者SNR、CNR比较差异无统计学意义(P>0.05)。4组受检者CT扫描图像主观评价比较差异无统计学意义(P>0.05)。结论多排螺旋CT低剂量扫描技术应用于甲状腺增强扫描中,能获得较好的扫描图像,不仅利于保证图像质量,同时利于提高诊断结果的准确性,且降低对患者产生的电离辐射损伤。Objective To investigate the value of 64 row CT low dose scanning technique in thyroid enhancement scanning.Methods From Jan.2016 to Dec.2017,152 patients with thyroid occupying lesions were studied in our hospital.All the patients underwent multislice spiral CT enhanced scan and pathological examination.The patients were divided into four groups according to the different current and voltage of multislice spiral CT.The significance of multi slice spiral CT scanning in the 4 groups was compared.Results There were no significant differences(U=0.1825,P=0.351 8>0.05)among the four groups of multi-slice spiral CT in the detection rate of nodular thyroid lesions(96.21%,94.38%,85.71%,87.50%)or the detection rate of diffuse thyroid lesions(77.78%,83.33%,80.00%,83.33%).There were significant differences in CTDIvol,DLP and ED among the four groups(P<0.05),and the radiation dose of group D was lower than that of group A and C.There were significant differences in thyroid CT value,background noise and background signal among the four groups(P<0.05).The thyroid CT value,background noise and background signal in group D were higher than those in group A,B and C(P<0.05).There was no significant difference in SNR and CNR among the four groups(P>0.05).There was no significant difference in subjective evaluation of CT scan images between the four groups(P>0.05).Conclusion The multislice spiral CT low-dose scanning technique used in thyroid enhanced scan can obtain satisfying scanning images,which is not only beneficial to the quality of the images,but also can improve the accuracy of the diagnosis and reduce the ionizing radiation damage to the patients.

关 键 词：多排螺旋CT 低剂量 甲状腺 

分 类 号：R581[医药卫生—内分泌]