Title :
A study of external end-shields for PET
Author :
Hasegawa, T. ; Murayama, H. ; Nakajima, T. ; Matsuura, H. ; Wada, Y.
Author_Institution :
Sch. of Allied Health Sci., Kitasato Univ., Sagamihara, Japan
Abstract :
The effects of external end-shields in screening radioactivity out-of the field-of-view were studied by phantom experiments with a help of Monte-Carlo simulation for ECAT EXACT HRS. Random coincidence rates were measured for a standard cylindrical phantom at out-of the field-of-view with and without an external end-shield. The results were well reproduced with Monte-Carlo simulation. Various single count rates were calculated as a function of the detector ring number by Monte-Carlo simulation
Keywords :
Monte Carlo methods; positron emission tomography; shielding; ECAT EXACT HRS; Monte-Carlo simulation; PET; detector ring number; external end-shields; field-of-view; medical diagnostic imaging; nuclear medicine; phantom experiments; random coincidence rates; screening radioactivity; single count rates; standard cylindrical phantom; Biomedical imaging; Detectors; Imaging phantoms; Light scattering; Measurement standards; Nuclear medicine; Positron emission tomography; Radioactive materials; Steel; USA Councils;
Conference_Titel :
Nuclear Science Symposium, 1999. Conference Record. 1999 IEEE
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-5696-9
DOI :
10.1109/NSSMIC.1999.842851
