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【英文标准名称】:Medicalelectricalequipment-CharacteristicsofdigitalX-rayimagingdevices-Part1-3:Determinationofthedetectivequantumefficiency-Detectorsusedindynamicimaging
【原文标准名称】:医疗电气设备.数字X射线成像装置的特性.第1-3部分:探测量子效率的测定.动态成像用探测器
【标准号】:IEC62220-1-3-2008
【标准状态】:现行
【国别】:国际
【发布日期】:2008-06
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/SC62B
【标准类型】:()
【标准水平】:()
【中文主题词】:定义;诊断设备;数字的;显示装置;动态的;电气工程;电医学;医疗设备;医疗放射照相术;医疗技术学;量子效率;辐射学;放射器具(医学);放射疗法;规范(验收);X射线图象增强器
【英文主题词】:Definitions;Diagnosticequipment;Digital;Displayunits;Dynamic;Electricalengineering;Electromedicine;Medicalequipment;Medicalradiography;Medicaltechnology;Quantumefficiency;Radiology;Radiologyapparatus(medical);Radiotherapy;Specification(approval);X-rayimageintensifiers
【摘要】:ThispartofIEC62220specifiesthemethodforthedeterminationoftheDETECTIVEQUANTUMEFFICIENCY(DQE)ofDIGITALX-RAYIMAGINGDEVICESasafunctionofAIRKERMAandofSPATIALFREQUENCYfortheworkingconditionsintherangeofthemedicalapplicationasspecifiedbytheMANUFACTURER.TheintendedusersofthispartofIEC62220aremanufacturersandwellequippedtestlaboratories.ThisPart1-3isrestrictedtoDIGITALX-RAYIMAGINGDEVICESthatareusedfordynamicimagingsuchas,butnotexclusively,directandindirectflatpanel-detectorbasedsystems.ItisnotrecommendedtousethispartofIEC62220fordigitalX-RAYIMAGEINTENSIFIER-basedsystems.NOTE1Thisnegativerecommendationisbasedonthelowfrequencydrop,vignettingandgeometricaldistortionpresentinthesedeviceswhichmayputseverelimitationsontheapplicabilityofthemeasurementmethodsdescribedinthisstandard.ThispartofIEC62220isnotapplicableto:–DIGITALX-RAYIMAGINGDEVICESintendedtobeusedinmammographyorindentalradiography;–COMPUTEDTOMOGRAPHY;and–systemsinwhichtheX-rayfieldisscannedacrossthepatient.NOTE2Thedevicesnotedaboveareexcludedbecausetheycontainmanyparameters(forinstance,beamqualities,geometry,timedependence,etc.)whichdifferfromthoseimportantfordynamicimaging.Someofthesetechniquesaretreatedinseparatestandards(IEC62220-1andIEC62220-1-2).
【中国标准分类号】:C43
【国际标准分类号】:11_040_50
【页数】:68P;A4
【正文语种】:英语


【英文标准名称】:TestMethodforDeterminingFloorFlatnessandLevelnessUsingtheF-NumberSystem(Metric)(04.11)
【原文标准名称】:用F-数字系统(米制)测定地板平直度和水平度的试验方法
【标准号】:ANSI/ASTME1155M-1996
【标准状态】:现行
【国别】:美国
【发布日期】:1996
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:楼板;试验
【英文主题词】:floors;testing
【摘要】:Thistestmethodcoversaquantitativemethodofmeasuringfloorsurfaceprofilestoobtainestimatesofthefloor'scharacteristicFFlatnessandFLevelnessFaceFloorProfileNumbers(F-Numbers)usingthemetric(SI)systemofunits.Note1-ThisisthemetriccompaniontoTestMethodE1155.Thetextofthistestmethodreferencesnotesandfootnotesthatprovideexplanatorymaterial.Thesenotesandfootnotes(excludingthoseintablesandfigures)shallnotbeconsideredasrequirementsofthistestmethod.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P04
【国际标准分类号】:91_060_30
【页数】:
【正文语种】:英语