直接数字化X线摄影系统图像处理方法研究
Abstract
ABSTRACT
Wimtller印idimprovementoftlledailylife,moreaIldmorepeoplebegiIlt0pay
aattentiont0tllehealtllcare.Thesta:tehasalsoinVestedlotofmaI】【power觚d
amateIlialresourcestopromotetlleheal也carestandards.MedicaliIllagediagnosisis
kindofroutineInedicalex撇inatiollS.It
bodyhasbeenwidelyusediIltllediagnosisaIld仃eatrnemofdiseaseandcheck—upoftheente印risesaIldiIlsti衄ionsorthe
砌iViduaJs.ESpecially,nleX—rayiIIlagingeXaminationis仔equentlyllsed.Witllme
deVelopmemoft11emateri以ssciencea11d也ecomputertecllIlology,t:heX—ray
imagiI培tecllIlolog),haSenteredⅡledirectdigital
originalfilm.IttakesraIdiography。(DR)em舶m也ef瓠erimagingspeedandbetteriIIlagequali够,andalsotlle
digitaIX—rayimaginghaSbroughtoutsomenewprobleIns.Forexample,howt0c蛳l
也e
metheexposure夥Stemautomatically?W11at’stheconverSion丘omtheX—raysignals?111et0elec们nicinlag堍systemmuStbestudyiI塔thec趾becalibrated.AndthedigitalX rayiIIlagesrleedtobepostprocessed.ByimagingmemodoftlleDRsystem,inlproVed,aIldme
aqum毋ofⅡledigitalX-聪可imagediagnosisand讹atInent
studyofdiseaSesinthehospitalwillbeb00Sted.Itisalsoref.erenceformeofothermedicalimagingmodels.MoreoVer,itisahefoulldationfornle
computer-aideddiagnosisi11
iIIlagingt11e觚urc.Eviderltly,itisVe巧importantt0studytlle me恤dfortheDRSystem.
on恤inlagingprocessof也eDRsystem,SeVeralkeyproble脚of龇
aSBaSedrelevantpartIlar旧beenstudiedi11thistllesis.SuChthecontrolofthe11igh-voltage
t0generator,imageacquisitionandcalibration,irrlagepost-processiI培.Ourgoalis
achieVe0ptiIllalcon臼ⅪloftheDRsystcmaIldgetbetterqualit),X-rayinlages.TIle
high.VoItagegeIleratoris也epower-suI)plydeVicefortlleX-ray,whichneedst0haVe
goodcooperation晰tllmecomputersystemsoast0controlt王leexposureprocessaIld
exchaIlgeexposure
receiVingdeVicep蹦吼etersfort11eX_rayiInaging.TheX—rayarriVesatmehlm】anaRer魄1sIIlissioninVolVingtllebody.Basedontheimaging
principlea11dmaterialproperties,廿leimageaoquisitionandiIllagecorrectionnlailllyⅡI