32层螺旋CT低剂量扫描技术在儿童颞骨检查中的应用  

作　　者：骆泽荣 祁明明 曲金荣[2] 窦新民[2] 张建伟[2] 党保华[3] 刘翠翠[2] 黎海亮[2] 

机构地区：[1]河南省通许县人民医院放射科,河南475400 [2]郑州大学附属肿瘤医院放射科 [3]郑州大学第三附属医院放射科

出　　处：《当代医学》2013年第10期1-3,共3页Contemporary Medicine

基　　金：河南省卫生科技创新型人才工程专项经费资助(201004057)

摘　　要：目的探讨32层螺旋CT低剂量扫描技术在儿童颞骨检查的临床应用价值。方法对50例临床怀疑颞骨病变的儿童行32层螺旋CT低剂量和常规剂量扫描,将其随机分为两组,对比两种剂量扫描的图像质量与患者的辐射剂量。结果 32层螺旋CT低剂量扫描与常规剂量扫描对显示颞骨的解剖结构及病变差异无统计学意义(P=0.391)。低剂量CT扫描显示儿童颞骨扫描参数中CTDIvol为6.24mGy、DLP为25.04mGy·cm,常规剂量CTDIvol为12.48mGy、DLP为50.07mGy·cm。低剂量与常规剂量相比,其CTDIvol和DLP降低了约50%的辐射剂量。结论 32层螺旋CT低剂量扫描对儿童颞骨的诊断结果与常规剂量差异无统计学意义,故32层螺旋CT低剂量扫描临床怀疑颞骨病变的患者,完全能替代常规剂量的32层螺旋CT扫描。Objective To investigate the clinical application value of low-dose of 32 slices helical CT scanning technology in the temporal bone of children. Methods Fifty cases of children with temporal bone of low-dose and conventional-dose 32 slices helical CT scanning, contrast two - dose scanning in patients with image quality and radiation dose. Results The display of the anatomical structure of the temporal bone showed no significance between low-dose CT scanning and conventional-dose CT scanning（P= 0.391）. The CTDIvol of low-dose CT scanning was 6.24 mGy, and DLP was 25.04 mGy.cm, and the CTDIvol of conventional doses was 12.48 mGy, DLP was 50.07 mGy.cm. The CTDIvol and DLP of low-dose CT scanning decreased half than conventional doses. COnClusion The low-dose CT scanning showing the lesions and qualitative diagnosis with conventional doses are no signigicantly difference, and the low-dose helical CT scanning in temporal bone of children can substitute for conventionaldose helical CT scanning.

关 键 词：体层摄影术 X线计算机 低剂量 儿童 颞骨 

分 类 号：R816.96[医药卫生—放射医学]