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ID:33331639
大小:652.17 KB
页数:19页
时间:2019-02-24
《z轴调制自动管电流调节技术在肺结核ct复查中的临床价值》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、·中文论著摘要·z轴调制自动管电流调节技术在肺结核CT复查中的临床价值目的探讨Z轴调制自动电流调节技术(ACTM)在肺结核患者CT复查中的临床价值。材料与方法100名肺结核复查患者,按就诊顺序随机分为4组,每组25人,A组为对照组,扫描方案选用标准噪声指数(NI)11.58,B、C、D组为实验组,噪声指数(NI)分别为13、15和19;其余扫描参数相同,应用自动管电流调节技术(ATCM)自动调节管电流(70—300MA)。由两名医师采用盲法对肺尖、中肺及下肺图像进行图像质量评分(IQS),并记录受检者的X线剂量参数,包括CT容积剂量指数(CTDIv01)、剂
2、量长度乘积(DLP),计算有效剂量(ED)。结果A组与B组间CTDIvol差异无统计学意义(P>0.05),即二组辐射剂量相当;A组与C、D组间CTDIvol差异有统计学意义(P<0.05),即C、D组辐射剂量低于A组。四组所有图像均能满足临床诊断要求,A、B两组图像质量评分无差异(P>0.05);A组与C组肺尖图像质量评分无差异(P>0.05),A组中肺及下肺图像质量优于C组(P3、射剂量。关键词自动管电流调节;辐射剂量;图像质量;噪声指数;计算机体层摄影英文论著摘要ClinicalvalueofZ.axisautomatictubecurrentmodulation(ATCM)techniqueCTscanninginpatientswithpulmonarytuberculosisPurposeTostudytheclinicalvalueofZ-axisautomatictubecurrentmodulation(ATCM、techniqueCTscanninginpatientswithpulmonarytuberculosis4、.MaterialsandmethodsAtotalof100patientswithpulmonarytuberculosisunderwentchestCTscan,accordingtOtreatmentrandomlydividedinto4groups(eachn225).Awasthecontrolgroup,withthescanprogramselectioncriterianoiseindex(NI)l1.58,B、CandDwastheexperimentalgroup,withthenoiseindex(NI)13、15and19;th5、esameastherestofscanningparameters,applicationofautomatictubecurrentmodulation(ACTM)adjustthetubecurrent(70—300MA).CTimageswereanalyzedbytworadiologistswithdoubleblindmethod.Imagequalityscores(IQS)oflungapex,middlelungandlowerlungweremade,andtheweightCTdoseindex(CTDIv01)anddoseleng6、thproduct(DLP)wasrecorded,andcalculatedtheeffectivedose(ED).ResultsTherewerenosignificantdifferencebetweenAandBgroupinCTDIvol(P>0.05),thetwogrouphasequivalentradiationdose.AandC、DgroupwerestatisticallysignificantdifferencesinCTDIvol(P<0.05),theC、Dgroupofradiationdoseislowerthangrou7、pA.AllimagesoffourgroupsCanmeettheclinicalrequirements,therewerenodifferencebetweenAandBgroupofimagequality(P>0.05);AandCgroupapexlungimagequalityhasnodifference(P>0.05),themiddleandlowerlungimagequalitygroupAisbeRerthangroupC(P<0.05);groupAinapex,middleandlowerlungimagequalityissu8、periortogroupD(P<0.05).2Co
3、射剂量。关键词自动管电流调节;辐射剂量;图像质量;噪声指数;计算机体层摄影英文论著摘要ClinicalvalueofZ.axisautomatictubecurrentmodulation(ATCM)techniqueCTscanninginpatientswithpulmonarytuberculosisPurposeTostudytheclinicalvalueofZ-axisautomatictubecurrentmodulation(ATCM、techniqueCTscanninginpatientswithpulmonarytuberculosis
4、.MaterialsandmethodsAtotalof100patientswithpulmonarytuberculosisunderwentchestCTscan,accordingtOtreatmentrandomlydividedinto4groups(eachn225).Awasthecontrolgroup,withthescanprogramselectioncriterianoiseindex(NI)l1.58,B、CandDwastheexperimentalgroup,withthenoiseindex(NI)13、15and19;th
5、esameastherestofscanningparameters,applicationofautomatictubecurrentmodulation(ACTM)adjustthetubecurrent(70—300MA).CTimageswereanalyzedbytworadiologistswithdoubleblindmethod.Imagequalityscores(IQS)oflungapex,middlelungandlowerlungweremade,andtheweightCTdoseindex(CTDIv01)anddoseleng
6、thproduct(DLP)wasrecorded,andcalculatedtheeffectivedose(ED).ResultsTherewerenosignificantdifferencebetweenAandBgroupinCTDIvol(P>0.05),thetwogrouphasequivalentradiationdose.AandC、DgroupwerestatisticallysignificantdifferencesinCTDIvol(P<0.05),theC、Dgroupofradiationdoseislowerthangrou
7、pA.AllimagesoffourgroupsCanmeettheclinicalrequirements,therewerenodifferencebetweenAandBgroupofimagequality(P>0.05);AandCgroupapexlungimagequalityhasnodifference(P>0.05),themiddleandlowerlungimagequalitygroupAisbeRerthangroupC(P<0.05);groupAinapex,middleandlowerlungimagequalityissu
8、periortogroupD(P<0.05).2Co
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