颅面部联合外伤患者不同剂量CT影像学表现及诊断效能  

CT imaging findings and diagnostic efficacy of different doses in patients with combined craniofacial trauma

作　　者：班明辉 陶晓飞 李亚新[1] BAN Minghui;TAO Xiaofei;LI Yaxin(Department of Radiology Imaging,Chengde Central Hospital,Chengde 067000,China)

机构地区：[1]河北省承德市中心医院放射医学影像科,河北承德067000

出　　处：《医学影像学杂志》2024年第5期38-42,共5页Journal of Medical Imaging

基　　金：河北省承德市科学技术课题支撑项目(编号:202109A181)。

摘　　要：目的探讨颅面部联合外伤患者不同剂量CT扫描影像学表现及诊断效能。方法选取本院收治的180例颅面部联合外伤患者作为观察对象,均行常规剂量CT检查,后将观察对象根据CT剂量随机分为(A、B、C)三组,各60例。A组较常规剂量降低10%、B组较常规剂量降低20%、C组较常规剂量降低30%。比较三组辐射参数[容积CT剂量指数(volume ct dose index,CTDIvol)、剂量长度乘积(dose-length product,DLP)、有效剂量(effective dose,ED)]、图像质量评分、平均CT值、信噪比、图像噪声、影像学表现及定性诊断结果。结果1)C组CTDIvol、ED及头颅部、面部DLP(17.12±3.25)mGy、1.31±0.34、(246.67±23.85)mGy·cm、(233.46±24.18)mGy·cm均0.05);3)三组影像学表现所占比例与常规剂量比较差异无统计学意义(P>0.05);4)三组颅骨骨折、颌面部骨折、鼻窦骨折、鼻骨骨折定性诊断结果比较差异均无统计学意义(P>0.05)。结论不同剂量CT扫描普遍适用于颅面部联合外伤患者扫描成像与定性诊断,其中较常规剂量降低30%的CT剂量可显著降低颅面部辐射剂量,实现颅面部一体化三维影像,为临床诊治患者提供有效的影像学信息。Objective To investigate the imaging findings and diagnostic efficiency of different dose Computed tomography(CT)in patients with combined craniofacial trauma.Methods A total of 180 patients with combined craniofacial trauma admit⁃ted to our hospital were selected as research objects.All of them underwent routine dose CT examination.The subjects were ran⁃domly divided into three groups according to the CT dose,with 60 cases in each group.Group A was reduced by 10%,group B by 20%,and group C by 30%compared with conventional dose.The radiation parameters[Volume CT dose index(CTDIvol)],dose-length product(DLP)and effective dose(DLP),image quality score,average CT value,signal-to-noise ratio,image noise,imaging findings and qualitative diagnosis results of the three groups were compared.Results 1)CTDIvol(17.12±3.25)mGy,ED 1.31±0.34,cranial DLP(246.67±23.85)mGy·cm,and facial DLP(233.46±24.18)mGy·cm in group C were lower than those,i.e.,(21.28±3.86)mGy,2.42±0.39,(334.46±27.17)mGy·cm,(302.25±26.82)mGy·cm in group B,(27.94±4.01)mGy,3.08±0.41,(402.28±33.46)mGy·cm,(395.12±30.33)mGy·cm in Group A,and(46.15±5.38)mGy,5.20±0.48,(788.87±46.18)mGy·cm,(648.89±35.56)mGy·cm(P<0.05)in conventional dose,corre⁃spondingly;2)There were no significant differences in scanning image quality,thin-layer reconstruction image quality score,average CT value,image noise,signal-to-noise ratio between the three groups and the conventional dose(P>0.05);3)There was no significant difference in the proportion of imaging findings between the three groups and the conventional dose(P>0.05);and 4)There was no significant difference in the qualitative diagnosis results of skull fracture,maxillofacial fracture,si⁃nus fracture and nasal bone fracture among the three groups(P>0.05).Conclusion Different doses of CT are widely used in the scanning imaging and qualitative diagnosis of patients with combined craniofacial trauma,in which the dose of CT reduced by 30%compared with the conventional dose can significantly reduce the r

关 键 词：颅面部联合外伤 剂量 影像学表现 诊断效能 体层摄影术 X线计算机 

分 类 号：R683.5[医药卫生—骨科学] R814.42[医药卫生—外科学]