Preliminary study for pixel identification on a modular gamma camera

Articolo

Data di Pubblicazione:

2014

Abstract:

Our grouphasrecentlyinvestigatedandproducednewscintigraphicprototypesbasedonadvanced
scintillation structure.Theaimofthisstudyistodemonstratetheuseofscintillationmatriceswithsize
equaltotheoverallareaofthePositionSensitivePhotomultiplierTube(PSPMT),todesignamodular
gamma cameraandstudythesolutionofthedeadareaproblemsoptimizingtheoverallpixel
identification.
In thispaperweinvestigatetheresponseofdifferentcombinationswithcrystalsintegratedwithin
tungsten structure,coupledwithH8500,R8900-C12andR11265-M64HamamatsuPSPMTs.Several
scintillation matrices,whosedimensionsmatchtothephysicalareaofthePSPMT,havebeenanalysedso
that wehavealsostudiedlimitsofdetectionfortheelementsofthematrixinthecriticalzonesofthe
PSPMT,i.e.cornersandborders.
In ordertoenhancethedetectabilityofscintillationelementsweimprovedthelightcollectionby
depositing metalliclayersortreatingthetungstenstructurewithdifferentcoatingmaterials,andshaping
the externalelementsofthescintillationmatrices.
The resultshaveshowngoodenergyresolutionandtheproposedmethodcanbeappliedinmedical
imaging forobtaininghighefficiency scintillationdevices.

Tipologia CRIS:

01.01 Articolo in rivista

Keywords:

Nuclear medicine imaging; Scintillation detector; Position Sensitive Photomultiplier Tube

Elenco autori: