【英文标准名称】:MethodsofTestingTolerancesforCottonYarns
【原文标准名称】:精制吡啶水溶解性的试验方法
【标准号】:ASTMD203-1933
【标准状态】:作废
【国别】:
【发布日期】:1933
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:芳族化合物;吡啶;油性涂料;溶剂;芳烃;涂料;试验;水溶解性
【英文主题词】:
【摘要】:
【中国标准分类号】:G17
【国际标准分类号】:
【页数】:
【正文语种】:


【英文标准名称】:Evaluationandroutinetestinginmedicalimagingdepartments-Part3-2:Acceptancetests-ImagingperformanceofmammographicX-rayequipment
【原文标准名称】:医学成像部门内的评估和例行测试.第3-2部分:验收测试.乳房X光照射设备的成像性能
【标准号】:BSEN61223-3-2-2008
【标准状态】:现行
【国别】:英国
【发布日期】:2008-09-30
【实施或试行日期】:2008-09-30
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:验收(鉴定);验收检验;验收试验;钢;;盒式磁带;稳定性试验;交货条件;剂量;电医学;曝光;图象质量;成象;记录单;乳腺X射线摄影术;医疗放射照相术;医学放射学;医学科学;医疗技术学;性能试验;辐射剂量;辐射防护;射线摄影;射线照片;辐射摄影术;辐射学;额定值;评定;警告;危险管理;安全;安全工程;试件;试样;试验;测试;试验条件;测试条件;试验装置;测试装置;外观检查(测试);外观检查(试验);X射线;X射线仪;X射线电子管
【英文主题词】:Acceptance(approval);Acceptanceinspection;Acceptancetests;Automaticexposuresystems;Cassettes;Constancytesting;Deliveryconditions;Dose;Electromedicine;Exposure;Imagequality;Imaging;Logsheets;Mammography;Medicalradiography;Medicalradiology;Medicalsciences;Medicaltechnology;Performancetests;Radiationdose;Radiationprotection;Radiographs;Radiography;Radiology;Ratings;Safety;Safetyengineering;Testpieces;Testspecimens;Testing;Testingconditions;Testingdevices;Visualinspection(testing);X-ray;X-rayapparatus;X-raytubes
【摘要】:ThispartofIEC61223appliestotheeffectivenessofmammographicX-RAYEQUIPMENT,withrespecttoimagequalityanddose,incombinationwithaspectsofEQUIPMENTsafety.ThisstandardappliestomammographicX-RAYEQUIPMENTandMAMMOGRAPHICSTEREOTACTICDEVICES.ThetestsdescribedinthisstandardrequirethequalityandperformanceoftheX-RAYIMAGERECEPTORStobeassuredpriortotheacceptancetestingwhentheyarenotanintegralpartofthemammographicX-RAYEQUIPMENT.ThisincludesRADIOGRAPHICFILMS,INTENSIFYINGSCREENS,RADIOGRAPHICCASSETTES,storagephosphorplatesandASSOCIATEDEQUIPMENTsuchasfilmprocessorsorstoragephosphorplatereaders,IMAGEDISPLAYDEVICESandHARDCOPYCAMERAS.FortestingRADIOGRAPHICCASSETTESandINTENSIFYINGSCREENS,thisstandardmakesreferencetoISO4090.Sensitivityandcontrastforthescreen-filmimagereceptorsareconsideredtobestatedaccordingtoISO9236-3.WhentheresultsoftheACCEPTANCETESTareincompliancewiththeexpectedvalues,thebaselinevaluesforthesubsequentCONSTANCYTESTSareestablished.ThispartofIEC61223definesa)theessentialparameterswhichdescribetheperformanceoftheabove-mentionedmammographicX-RAYEQUIPMENTwithregardtoimagequalityanddose;andb)themethodsoftestingwhethermeasuredquantitiesrelatedtothoseparameterscomplywithspecifiedtolerances.Thesemethodsmainlyrelyonnon-invasivemeasurementsthatuseappropriatetestEQUIPMENTandareperformedduringoraftertheinstallation.SignedstatementscoveringstepsintheinstallationprocedurecanbeusedaspartoftheACCEPTANCETEST.Testsrequiredbyahigherlevelofcompliancetakeprecedenceoversimilartestswithalowerlevelofcompliance.Thisconceptisdescribedin4.1.Thisstandarddoesnotinitselfspecifylimitingvaluesortolerancesfortheparametersunderinvestigation.Adifficultymayarisewithregardtotheresponsibilityforacceptancetestingwhenthefilm/screencombination,filmprocessingchemistryorcomputedradiographysystemischanged.Thisarisesfromacombinationofcauses.Firstly,theimagereceptorMANUFACTURERandtheX-RAYEQUIPMENTMANUFACTURERmaybedifferent.Secondlyachangeinimagereceptororfilmprocessingchemistrymayalterthesystemperformance.Whensystemintegrationsuchastheaboveoccurs,itisimportantthatacceptancetestingisperformed.Whenachangeoccurswhichcouldaltersystemperformance,itisessentialthatthesystemintegrator(i.e.whoeverisresponsibleforthischange)discussestheimplicationoftheirchangewiththeX-RAYEQUIPMENTMANUFACTURERsothatthelattercanadjusttheimagingsystemifnecessary.
【中国标准分类号】:C43
【国际标准分类号】:11_040_50
【页数】:66P.;A4
【正文语种】:英语