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时间:2019-10-25
《X线数字断层融合成像与常规DR成像放射剂量比较》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、万方数据。皇璺:!b剑曼i迨董!x线数字断层融合成像与常规DR成像放射剂量比较郭勇,王庆军,张君,赵书臣,韩静慧【摘要】目的:比较断层融合成像(DTS)与常规DR的放射剂量。方法:将进行X线检查的连续就诊患者随机分入常规DR组和DTS组,选择14个常规检查部位,每个部位、每组各10人。常规DR及DTS均采用GEVolmneRAD.根据成像质量需要及尽可能减少放射剂量的要求选择主要成像参数。结果:各检查部位DTS放射剂量明显高于常规DR(P<0.001),是常规DR的3.73~12.84倍,平均7.71倍。其中胸椎、腰椎、颅骨、骨盆等部位放射剂量较大.明显高于其他部位(P<0
2、.001)。胸椎、腰椎侧位放射剂量明显高于正位(P<0.001),分别是正位的2.35倍和1.44倍。结论:DTS平均放射剂量明显高于常规DR,因此在不影响诊断和病变显示的情况下,应选择合理的成像参数、选择体厚小的投照方向.以尽可能降低放射剂量。[关键词】断层融合术;放射摄影术;体层摄影术[中国图书资料分类号]R318.6;R445【文献标志码]A[文章编号]1003—8868(2014)01—0098—03DOI:10.7687/J.ISSNl003—8868.2014.01.098ComparativeStudyofDigitalTomosynthesisandRadi
3、ographyforRadiationDoseGUOYong。,WANGQing-junl,ZHANGJunl,ZHAOShu—chenl,HANJing—hui2(1.DepartmentofRadiology,NavyGeneralHospital,Beijing100048,China;2.GEHeahhcareChina,Beijing100176,China)AbstractⅨ咖曲eTodetectandcomparetheentrancesurfacedoseofdigitaltomosynthesis(DTs)andradiographyinbodyimagi
4、ng.MaIj¨。Totally14partsofthebodywereselectedforbothDTSandradiographyimaging.Therewere10patientsincludedineachpartofthebodyforeachexamination.DTSandradiographywereperformedbyusingaunitofVolumeRAD(GEHeahhcare).DTSandradiographyparameterswereselectedtoensureagoodimagequalityandalowradiationdo
5、se.PamlltThemeanradiationdosesofDTSineachpansofthebodyweremarkedlvhigherthanthatofradiography(P<0.0011.generally3.73to12.84timesoraveragely7.7ltimesofthelatter.ThemeanradiationdosesofDTSinthoracicvertebrae,lumbarvertebrae,skull,pelviswerenotablyhigherthanthoseinotherpartsofthebody(P<0.001)
6、.Themeanradiationdosesoflateralprojectionweremarkedlyhigherthanthatofanterior—posteriorprojectioninthoracicvertebrae(2.35timesofthatofanterior—posteriorprojectionlandlumbarvertebrae(1.44timesofthatofanterior—posteriorprojection).C:0-dh蛔ThemeanradiationdoseofDTSismarkedlyhigherthanthatofrad
7、iography.Inordertoreducetheradiationdoseandkeepgoodimagequalitysimultaneously,reasonableDTSparametersandprojectivedirectionshouldbeselected.[ChineseMedicalEquipmentJournal,2014,35(1):98—99,102]Keywordstomosynthesis;radiography;tomography0引言数字断层融合技术(digitaltomo
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