螺旋CT低剂量扫描在颅面部外伤中的应用价值  

Value of Low-dose Multi-slice CT in Application of Craniofacial Trauma

作　　者：罗焕江[1] 

机构地区：[1]广西医科大学第四附属医院,广西柳州545005

出　　处：《医疗卫生装备》2009年第9期81-82,共2页Chinese Medical Equipment Journal

摘　　要：目的:探讨不同低剂量CT扫描在颅面部外伤中的应用价值。方法:将60例颅面部外伤患者分为4组,其中1组行常规剂量扫描,其余3组行不同低剂量CT扫描,比较常规剂量组(120kV,220mA)和低剂量组(120kV,160、80、60mA)共4组的图像质量及患者所受辐射剂量。结果:低剂量(160、80mA)CT扫描所得CT图像较好,60mA组患者所受辐射剂量较低,比常规剂量组单次扫描权重剂量指数分别降低了33%、67%和73%;低剂量(160、80mA)与常规剂量组所得图像质量比较无明显差异,60mA组与常规剂量组所得图像质量比较有显著性差异。结论:可利用低剂量(80mA)对颅面部外伤进行扫描,所得的图像对疾病的诊治无影响。Objective To explore the different low-dose CT scanning of the eraniofacial trauma of application value.Methods 60 cases of craniofaeial trauma patients were divided into one group of conventional-dose group of line scan and 3 different low-dose CT scan, the conventional dose group（120 kV, 220 mA）, low dose group （120 kV, 60, 80,60 mA） compared the level 4 group of patients with image quality and radiation dose received,Results The low-dose （160,100 mA） CT scan obtained better CT image, patients of 60 mA group received a lower radiation dose. Group single-scan dose index weights were reduced 33%, 67% and 73% respectively; There was no significant differences between low-dose group（160, 80 mA） and the normal group, while there was significant differences between the group of 60mA and normal group. Concluaion The use of low-dose （80 mA） for craniofacial trauma scan images obtained from the diagnosis and treatment of disease has no bad effect.[Chinese Medical Equipment Joumal,2009,30（9）：81-82]

关 键 词：低剂量 颅面部 体层摄影术 X线计算机 

分 类 号：R816.1[医药卫生—放射医学] R651[医药卫生—临床医学]