Title :
A study of external end-shields for PET
Author :
Hasegawa, T. ; Michei, C. ; Kawashima, K. ; Murayama, H. ; Nakajima, T. ; Matsuura, H. ; Wada, Y.
Author_Institution :
Sch. of Allied Health Sci., Kitasato Univ., Sagamihara, Japan
fDate :
6/1/2000 12:00:00 AM
Abstract :
The effect of external end-shields in screening radiation from outside the Field of View (FOV) was studied by phantom measurements and confirmed by Monte Carlo simulation of the ECAT EXACT HR+. Accidental coincidence rates were measured with a standard calibration cylinder placed outside the FOV with and without one of several external end shields. These measurements were in excellent agreement with the Monte-Carlo simulation, which included details, such as the count rate as a function of the ring number
Keywords :
Monte Carlo methods; calibration; positron emission tomography; shielding; ECAT EXACT HR+; Monte Carlo simulation; Monte-Carlo simulation; PET; accidental coincidence rates; count rate; external end shields; external end-shields; field of view; ring number; standard calibration cylinder; Biomedical imaging; Calibration; Imaging phantoms; Laboratories; Noise measurement; Nuclear measurements; Nuclear medicine; Petroleum; Positron emission tomography; Scattering;
Journal_Title :
Nuclear Science, IEEE Transactions on
