30例非晶体硒平板探测器dr与cr胸腰段脊柱成像的比较

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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