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时间:2017-12-10
《30例非晶体硒平板探测器dr与cr胸腰段脊柱成像的比较》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、维普资讯http://www.cqvip.com48重庆医学2007年1月第36卷第1期·论著·3O例非晶体硒平板探测器DR与CR胸腰段脊柱成像的比较曾勇明,张志伟,陆云峰,刘佐贤,彭玉兰,黄永火(重庆医科大学附属第一医院放射科400016)摘要:目的比较非晶体硒平板探测器DR与CR系统的临床胸腰段脊柱照片,通过观察者评分的比较,研究图像质量和解剖结构可见度。方法分析3O对胸腰段脊柱照片图像,每对图像分别用DR和CR系统获得,并有相同的曝光指数范围。采用5点记分法进行观察者评分.评价12个解剖结构的图像质量
2、和可见度。结果两种系统的图像质量差异无统计学意叉(P>0.05)。3个解剖结构(Ll正位横突、Tll侧住上下关节突和L1侧位棘突)的显示可见度,非晶体硒平板探测器DR系统优于CR系统,差异有统计学意叉(P0.05)。结论非晶体硒平板探测器DR系统的胸腰段脊柱成像的图像质量和解剖可见度等于或优于CR系统。关键词:数字X线摄影;非晶体硒;平板探测器;图像质量中圈分类号:R814文献标识码:A文章编号:1671—8348(2007)01—48-03Com
3、parisionbetweenamorphousseleniumflat-paneldetectordigitalradiographyandcomputedradiographyin30spineimagingZENGng—ruing,ZHANGZhi—wei,L【,Yun-feng,eta1.(DepartmentofRadiology,FirstAffiliatedHospital·ChongqingUniversityoyMedicalSciences,Chongqing400016,China)A
4、bstract:0bjectiveTocompareclinicalspine(thoracicvertebraandlumbarvertebra)radiographysofaamorphousseleniumflat—paneldetectordigitalradiographysystemandacomputedradiographysystem.Thecomparisionwasbasedonanobserverpref—erencetostudyimagequalityandvisibilityo
5、fanatomicstructures.MethodsThirtypairsofspineradiographyswereanalyzedonvideomonitor(2048×2560×8bit).Ineachpair,oneradiographywasobtainedwithamorphousseleniumfiat-paneldetectordigitalradiographysystem,andtheotherradiographywasobtainedwithcomputedradiography
6、system.Eachpairsofradiographyswasob—tainedatsameexposureindex(EI).Observerpreferencewasevaluatedfortheimagequalityandthevisibilityof12anatomicstruc—turesusingafive-pointscale.Results(1)Therewasnodifferencebetweentheimagesqualityofthetwosystem(P>0.05).(2)Th
7、evisibilityof3anatomicstructuresoftheimagesobtainedwiththeamorphousseleniumflat—pane1detectordigitalradiographysystemweresignificantlysuperiortothoseobtainedwiththecomputedradiographysystem(P<0.05).ConclusionTheimagequalityandvisibilityofanatomicstructures
8、ontheimagesobtainedbytheamorphousseleniumflatpaneldetectordigitalradio—graphysystemwereequalorsuperiortotheimagesfromthecomputedradiographysystem.Keywords:digitalradiography;amorphousselenium;flat—paneldetect
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