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Detector Designs used in PET
• One-to-one coupling:
– Single crystals glued to individual
photo-detector
– Spatial resolution limited by
discrete crystal size
• Block detector design:
– Rectangular scintillator
– block sectioned by
– partial saw cuts of
– different depth into
– discrete elements
– Usually 4 attached PMTs
– Anger positioning
Standard
block detector
design
scheme (from
[2])