Title :
Efficient algorithm for modeling keel-edge pinhole response
Author :
Jansen, Floris P. ; Qian, Hua ; Beque, Dirk
Author_Institution :
GE Global Res., Niskayuna, NY, USA
fDate :
Oct. 24 2009-Nov. 1 2009
Abstract :
We describe an efficient method for computing the system response (sensitivity and point spread function) of a conventional gamma camera with multiple keel-edge pinhole collimators, taking into account geometric acceptance effects at the collimator as well as detector response. An efficient way of storing the resulting system matrix permits us to achieve very fast iterative reconstruction with reasonable memory requirements.
Keywords :
collimators; computerised tomography; image reconstruction; position sensitive particle detectors; efficient algorithm; gamma camera; geometric acceptance effects; iterative reconstruction; modeling keel-edge pinhole response; multiple keel-edge pinhole collimators; point spread function; sensitivity profile; Cameras; Collimators; Image edge detection; Image reconstruction; Image resolution; Nuclear and plasma sciences; Radiation detectors; Shape; Solid modeling; Telephony;
Conference_Titel :
Nuclear Science Symposium Conference Record (NSS/MIC), 2009 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4244-3961-4
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2009.5401920
