[Gate-users] Intrinsic spatial resolution in SPECT

[Asra Talebi]

HELLO


I calculated Intrinsic spatial resolution of the SPECT camera with a point source, positioned

at the top of detector , 2 mm from the crystal surface.THE  FWHM of the point source was calculated 9.8 mm.but the real value of intrinsic spatial resolution is 3.5 mm.I change setSpresolution in digitizer macro file but the FWHM   do not vary Significant.
how can i modify spect head or digitizer macro file for receiving real results.



thanks


/gate/digitizer/Singles/insert adder
/gate/digitizer/Singles/insert blurring
/gate/digitizer/Singles/blurring/setResolution 0.099
/gate/digitizer/Singles/blurring/setEnergyOfReference 140. keV
/gate/digitizer/Singles/insert spblurring
/gate/digitizer/Singles/spblurring/setSpresolution 2.3 mm
/gate/digitizer/Singles/spblurring/verbose 0
/gate/digitizer/Singles/insert thresholder
/gate/digitizer/Singles/thresholder/setThreshold 126 keV
/gate/digitizer/Singles/insert upholder
/gate/digitizer/Singles/upholder/setUphold 154 keV








































asra sadat talebi
PhD Scholar
Tarbiat Modares University
Department of medical physics
Tehran - Iran
E-mail address:  asra.talebi at modares.ac.ir
asra.talebi at yahoo.com

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