Super SpatialResolution(SSR)methodforscintigraphicimaging G. Trinci a,b, R.Massari a,b, M.Scandellari a, F.Scopinaro c, A.Soluri a,b,n a Institute ofBiomedicalEngineering,CNR,Rome,Italy b Li-tech S.p.A.,Monterotndo,Rome,Italy c Nuclear Medicine,‘‘Sapienza’’UniversityofRome,Italy a r t i c l e info Article history: Received 26May2010 Received inrevisedform 14 October2010 Accepted 17October2010 Keywords:: Nuclear medicineimaging Super SpatialResolution Spatial Resolution High ResolutionGammaCamera Position SensitivePhotomultiplierTube a b s t r a c t This workdescribesaninnovativepatentedSuperSpatialResolution(SSR)methodappliedto scintigraphicdevices.TheaimofSuperResolution(SR)techniquesistoenhancetheresolutionofan imagingsystem,usinginformationfromseveralimages.SRreconstructionmaybeconsideredasasecond generationproblemofImageRestoration.ItcombinesseveralslightlydifferentLowResolution(LR) images toobtainaHighResolution(HR)image.SRtechniquesare,widely,describedinscientificliterature mainlyforapplicationsinvideocommunication,objectrecognitionandimagecompression. In thispaperwefocustoapplytheSRtasktothescintigraphicimaging.Specifically,itisdescribedasa patentedmethodthatusesaHighResolutionScintigraphicCamera(HRSC)tocollectandprocessasetof scintigraphicimages,inviewofobtainingaveryhighresolutionimage. The HRSCdevice,whichiscurrentlyusedinMedicalImaging,isbasedonaparallelsquareholes collimatorandonaHamamatsuH8500PositionSensitivePhotomultiplierTubes(PSPMT). The SSRmethodisappliedtothesyntheticimagesofthreedifferentphantoms,toverifytheeffective spatialresolutionvalues.Theresultsconfirmthatitispossibletoachieveoptimalspatialresolutionvalues at differentdepths,usefulinsmallobjectandsmallanimalimaging. Our studyconfirmsthefeasibilityofaveryhighresolutionsysteminscintigraphicimagingandthe possibilitytohavegammacamerasusingtheSSRmethod,toperformclinicalapplicationsonpatients. & 2010 ElsevierB.V.Allrightsreserved
Super Spatial Resolution (SSR) method for scintigraphic imaging / G., Trinci; R., Massari; M., Scandellari; Scopinaro, Francesco; A., Soluri. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT. - ISSN 0168-9002. - STAMPA. - 626:(2011), pp. 120-127. [10.1016/j.nima.2010.10.077]
Super Spatial Resolution (SSR) method for scintigraphic imaging
SCOPINARO, Francesco;
2011
Abstract
Super SpatialResolution(SSR)methodforscintigraphicimaging G. Trinci a,b, R.Massari a,b, M.Scandellari a, F.Scopinaro c, A.Soluri a,b,n a Institute ofBiomedicalEngineering,CNR,Rome,Italy b Li-tech S.p.A.,Monterotndo,Rome,Italy c Nuclear Medicine,‘‘Sapienza’’UniversityofRome,Italy a r t i c l e info Article history: Received 26May2010 Received inrevisedform 14 October2010 Accepted 17October2010 Keywords:: Nuclear medicineimaging Super SpatialResolution Spatial Resolution High ResolutionGammaCamera Position SensitivePhotomultiplierTube a b s t r a c t This workdescribesaninnovativepatentedSuperSpatialResolution(SSR)methodappliedto scintigraphicdevices.TheaimofSuperResolution(SR)techniquesistoenhancetheresolutionofan imagingsystem,usinginformationfromseveralimages.SRreconstructionmaybeconsideredasasecond generationproblemofImageRestoration.ItcombinesseveralslightlydifferentLowResolution(LR) images toobtainaHighResolution(HR)image.SRtechniquesare,widely,describedinscientificliterature mainlyforapplicationsinvideocommunication,objectrecognitionandimagecompression. In thispaperwefocustoapplytheSRtasktothescintigraphicimaging.Specifically,itisdescribedasa patentedmethodthatusesaHighResolutionScintigraphicCamera(HRSC)tocollectandprocessasetof scintigraphicimages,inviewofobtainingaveryhighresolutionimage. The HRSCdevice,whichiscurrentlyusedinMedicalImaging,isbasedonaparallelsquareholes collimatorandonaHamamatsuH8500PositionSensitivePhotomultiplierTubes(PSPMT). The SSRmethodisappliedtothesyntheticimagesofthreedifferentphantoms,toverifytheeffective spatialresolutionvalues.Theresultsconfirmthatitispossibletoachieveoptimalspatialresolutionvalues at differentdepths,usefulinsmallobjectandsmallanimalimaging. Our studyconfirmsthefeasibilityofaveryhighresolutionsysteminscintigraphicimagingandthe possibilitytohavegammacamerasusingtheSSRmethod,toperformclinicalapplicationsonpatients. & 2010 ElsevierB.V.AllrightsreservedI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
