Title :
A PET camera simulator with multispectral acquisition capabilities
Author :
Lecomte, R. ; Cadorette, J. ; Rodrigue, S. ; Héon, M. ; Rouleau, D. ; Richard, P. ; Bentourkia, M. ; Msaki, P.
Author_Institution :
Sherbrooke Univ., Que., Canada
Abstract :
The Sherbrooke PET (positron emission tomography) simulator was designed and built to investigate the performance characteristics of a high-resolution PET camera based on avalanche photodiode detectors. The simulator consists of a computer-controlled scanning table with 32 detection channels shared between front-end casettes and FASTBUS boards, and of a PC-based multichannel analyzer (MCA) used as histogramming memory for multiparametric data acquisition. Tomograph data are collected by scanning one of two opposite arrays of detectors and by rotating the object in a predetermined sequence to simulate a complete ring of detectors with various sampling schemes. All acquisition parameters are programmable through digital-to-analog converters or on-board registers. Data can be acquired in several modes: calibration, where direct or coincident energy spectra from all detectors can be registered simultaneously; standard, where only energy-validated coincident events are histogrammed as lines-of-response (LOR) addresses; and multispectral, where the LOR address is encoded with the energy information to provide a multiparameter histogram
Keywords :
biomedical equipment; cameras; computerised tomography; radioisotope scanning and imaging; FASTBUS boards; PC-based multichannel analyzer; PET camera performance characteristics; PET camera simulator; Sherbrooke PET; avalanche photodiode detectors; computer-controlled scanning table; detectors ring; digital-to-analog converters; energy-validated coincident events; front-end casettes; histogramming memory; lines-of-response addresses; medical diagnostic imaging; multiparametric data acquisition; multispectral acquisition; nuclear medicine; on-board registers; positron emission tomography; Analytical models; Avalanche photodiodes; Cameras; Computational modeling; Computer simulation; Data acquisition; Detectors; Fastbus; Object detection; Positron emission tomography;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference, 1992., Conference Record of the 1992 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-0884-0
DOI :
10.1109/NSSMIC.1992.301103
