MSCT扫描剂量减低对颅脑合并面部外伤诊断的影响  

Effect of MSCT Scanning Dose Reduction on the Diagnosis of Craniocerebral Combined with Facial Trauma

作　　者：陶晓飞 马文灿 丁智超 李亚新[1] 韩福生[1] 唐洋 TAO Xiaofei;MA Wencan;DING Zhichao;LI Yaxin;HAN Fusheng;TANG Yang(Chengde Central Hospital,Chengde 067000,Hebei,P.R.China)

机构地区：[1]承德市中心医院,河北承德067000

出　　处：《影像科学与光化学》2022年第5期1153-1157,共5页Imaging Science and Photochemistry

基　　金：承德市科技支撑课题项目(202109A181)。

摘　　要：探讨多层螺旋CT(MSCT)扫描剂量减低对颅脑合并面部外伤诊断的影响。选取180例颅脑合并面部外伤患者,将患者分为A组、B组和C组,每组60例,A组给予管电流220 mA和200 mA MSCT扫描,B组给予管电流220 mA和180 mA MSCT扫描,C组给予管电流220 mA和160 mA MSCT扫描,分析各组颅面部骨折检出、图像质量及辐射剂量。A组管电流200 mA、B组管电流180 mA、C组管电流160 mA下CT剂量指数(CTDI_(VOI))、剂量长度乘积(DLP)和有效剂量(ED)明显低于A组、B组和C组管电流220 mA下水平(P<0.05);C组管电流160 mA下CTDI_(VOI)、DLP和ED明显低于A组管电流200 mA、B组管电流180 mA下水平(P<0.05)。在颅脑合并面部外伤诊断中,适当减低MSCT扫描剂量不会影响诊断及图像质量,同时有助于降低对患者的辐射危害。This paper investigated the effect of reduced dose of multislice spiral CT(MSCT)on the diagnosis of craniocerebral combined with facial trauma.Selected 180 patients with craniocerebral combined with facial trauma and divided into group A,group B and group C,with 60 cases in each group.Group A was given tube current 220 mA and 200 mA MSCT scanning,group B was given tube current 220 mA and 180 mA MSCT scanning,and group C was given tube current 220 mA and 160 mA MSCT scanning.Analyzed the detection,image quality and radiation dose of craniofacial fractures in each group.CT dose index volume(CTDI_(VOI)),dose length product(DLP)and effective radiation dose(ED)in group A under 200 mA,180 mA in group B and 160 mA in group C were significantly lower than those in under 220 mA in group A,B and C(P<0.05).The CTDIVOI,DLP and ED in group C with tube current of 160 mA were significantly lower than those in group A with tube current of 200 mA and group B with tube current of 180 mA(P<0.05).In the diagnosis of craniocerebral combined with facial trauma,appropriately reducing the MSCT scanning dose will not affect the diagnosis and image quality,and will help to reduce the radiation harm to patients.

关 键 词：多层螺旋CT 低剂量 颅脑合并面部外伤 诊断 辐射剂量 

分 类 号：R651.15[医药卫生—外科学] R816.1[医药卫生—临床医学]