Title :
Experimentally determining a parametric model for the point source response of a gamma camera
Author :
Hebert, T. ; Murphy, Patrick ; Moore, William ; Dhekne, R. ; Wendt, R. ; Blust, M.
Author_Institution :
Dept. of Electr. Eng., Houston Univ., TX, USA
fDate :
8/1/1993 12:00:00 AM
Abstract :
The response of a gamma camera is experimentally investigated as a function of two parameters, i.e., depth of the source in water and remaining distance in air from the gamma camera. The linearity of the full width half maximum (FWHM) resolution measure versus these two parameters is demonstrated. A method for experimentally estimating the parameters of any camera response model from the experimental data is presented. This approach is used to estimate the parameters of a 2D Gaussian model for the camera point source response in a true 3D formulation
Keywords :
biomedical equipment; cameras; computerised tomography; gamma-ray apparatus; gamma-ray detection and measurement; radioisotope scanning and imaging; 2D Gaussian model; FWHM; SPECT; air; depth; full width half maximum; gamma camera; linearity; parametric model; point source response; remaining distance; resolution measure; true 3D formulation; Attenuation; Biomedical imaging; Cameras; Electromagnetic scattering; Hospitals; Optical collimators; Parametric statistics; Particle scattering; Reconstruction algorithms; Single photon emission computed tomography;
Journal_Title :
Nuclear Science, IEEE Transactions on
