Author:
Sadremomtaz A.,Mohammadi Ghalebin M.
Abstract
Abstract
The selection of suitable high-efficiency scintillation
detectors plays an essential role in improving the quality of PET
images. Many studies have used two layers of crystal detectors with
different scintillation materials. This research uses GATE
simulation to simulate an animal PET system with a two-layer
detector. By varying the type of the crystal detectors, essential
parameters such as sensitivity, scatter fraction, noise equivalent
counting rate, spatial resolution, energy resolution, and time
resolution for different scintillation materials were calculated and
compared to determine the most efficient solutions. This simulation
used scintillating materials; LYSO, GSO, LSO, BGO, YAP, LuAP, and
LPS in 12 different states. Results showed that by increasing the
distance of the source from the center in the radial direction, the
two-layer crystals with different scintillation materials have a
better radial spatial resolution than the same material of
crystals. As a general result, the PET system's performance,
designed from two-layer crystals with different scintillation
materials, lower layer LuAP and upper layer BGO or same-material of
BGO, is more desirable than the rest.
Subject
Mathematical Physics,Instrumentation
Cited by
4 articles.
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