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X射线闪烁体成像探测器光学编码成像研究.docx

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X射线闪烁体成像探测器光学编码成像研究 Title:ResearchonOpticalEncodingImaginginX-rayScintillationDetector Abstract: X-rayimagingplaysacrucialroleinmedicaldiagnostics,securityinspections,andotherindustrialapplications.X-rayscintillationdetectorsarewidelyusedinX-rayimagingduetotheirhighdetectionefficiencyandexcellentenergyresolution.However,thetraditionalphotomultipliertube(PMT)basedreadoutsystemshavelimitationsintermsofspatialresolutionandcost.ThispaperaimstoexploretheuseofopticalencodingimagingtechniquestoovercometheselimitationsandimprovetheperformanceofX-rayscintillationdetectors. Introduction: X-rayscintillationdetectorsarewidelyusedinmedicalimaging,materialanalysis,andsecurityinspectionduetotheirabilitytoconvertX-rayphotonsintodetectablelight,enablingthecreationofhigh-resolutionimages.TraditionalreadoutsystemsbasedonPMTsconvertthedetectedlightintoelectronicsignals,buttheyhavelimitationssuchaslimitedspatialresolutionandhighcost.Toaddresstheselimitations,researchershavestartedexploringopticalencodingtechniquesforX-rayscintillationdetectors.Opticalencodingimagingemploystheuseofimagesensorsandopticalfiberstodirectlycapturethescintillationlightandtransmitittothesensorfordetectionandimaging. OpticalEncodingTechniques: 1.Fiber-opticplate(FOP): -FOPisacommonlyusedopticalencoderinX-rayscintillationdetectors. -TheFOPconsistsofabundleofopticalfiberssandwichedbetweentwoplateswithmicrostructures. -ThescintillationlightenterstheFOPandpropagatesthroughtheopticalfibers,preservingthespatialinformation. -Thelightemittedfromthefibersisdirectlycapturedbyanimagesensorforreadout. -FOP-basedsystemsofferimprovedspatialresolutionandcanbecost-effectivecomparedtoPMT-basedsystems. 2.Micro-pixelarray: -Micro-pixelarrayisanemergingopticalencodingtechnique. -Itconsistsofatwo-dimensionalmatrixofsmallpixels,eachactingasanindividualscintillationdetector. -Eachmicro-pixelisconnectedtoaphotodiodefordirectlightdetection. -Thepixelatedstructureallowsforhighspatialresolutionimagingwithminimalcrosstalk. -Micro-pixelarra