16层螺旋ct低剂量扫描在成人活动性继发性肺结核复查中的可行性分析

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1、山东大学硕士学位论文Objective：EnglishAbstractToprobetheclinicalvalueoflow·-dosescanningwith16·-slicespiralCTindetectionofsecondaryactivepulmonarytuberculosisinadults．Methods：Choose130casesofadultactivityofsecondarypulmonarytuberculosisrequiresseveralreview,routinedose(120mA)Wasperformedimmediatelyafters

2、canning，lowdose(15～40mA)scanning，twokindsofscanningarefixedtubevoltageof120Kv,andtheimageoftwoscanningtosmoothingfilteringwaythinslicereconstruction1．25mm，imagequalityevaluationforimagetwoSCanSandthinreconstructionobtained；recordsofthetwoSCanSandthinreconstructionimagingcharacteristics，theCTdo

3、seindex(CTDIv01)，thedoselengthproduct(DLP)andshort—termefficacyparameters，calculatestheeffectivedose(ED)andforquantitativemeasurementandevaluationofdifference．Results：Betweenconventionaldoseandlow-doseCTscanningimagequalityhadnosignificantdifference(P=0．1210)；nostatisticallysignificantdifferen

4、cesbetweenthetwokindsofscanningmodeandthinslicereconstructionimagequality,consistentimagequality(P>O．05)；twokindsofscanningandreconstructionfoundground-glassdensitylesions，tree-in-budsign，consolidationlesions，cavity,bronchiectasis，bronchialstenosis，intralesionalcalcificationinsevenkindsofimagi

5、ngshowednosignificantdifference(P>0．05)，consistentwiththefeaturesofimages；thelesionsimprovementrateof85．4％．AtthesametimebytheX·rayradiationdoseexaminationweredecreasedsignificantly．Conclusion：Low-dosespiralCTscanningoflunginadultactivitydetectioneffectofsecondarypulmonarytuberculosiswithconven

6、tionaldosesofCT,reducestheradiationdose，checkformanytimesandcanbeusedwithpulmonarytuberculosis．Keywords：2山东大学硕士学位论文lung；activities；pulmonarytuberculosis；secondary；adult；tomography,X-raycomputed；radiationdose3山东大学硕士学位论文英文缩写BMIFOVCTDIv01DLPED4符号说明英文全称中文名称bodymassindex身体质量指数filedoftime视野CTdoseind

7、exofvolume容积CT剂量指数doselengthproducteffectivedose剂量长度乘积有效剂量山东大学硕士学位论文16层螺旋CT低剂量扫描在成人活动性继发性肺结核复查中的可行性研究前言莉吾随着CT技术的普及应用，CT对受检人群的辐射危害问题也引起人们高度关注。因此，低剂量CT近年来得到了广泛的关注，并在肺癌的早期筛查等临床实践中得到了充分应用。由于活动性继发性肺结核患者在诊治过程中需要多次CT扫描，如何减少辐射剂量也成为患者及医生面临的问题之一，