Title :
A PET camera simulator with multispectral data acquisition capabilities
Author :
Lecomte, R. ; Cadorette, J. ; Rodrigue, S. ; Héon, M. ; Bentourkia, M. ; Msaki, P. ; Rouleau, D. ; Richard, P.
Author_Institution :
Sherbrooke Univ., Que., Canada
fDate :
8/1/1993 12:00:00 AM
Abstract :
The Sherbrooke positron emission tomography (PET) simulator was designed and built to investigate parameters which influence the performance 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 cassettes and FASTBUS boards, and of a PC-based multichannel analyzer (MCA) used as a histogramming memory for multiparametric data acquisition. Tomographic 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 onboard 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 addresses; and multispectral, where the LOR address is encoded with the energy information to provide a multiparameter histogram. Data samples obtained in these modes are presented
Keywords :
biomedical equipment; computerised tomography; data acquisition; patient diagnosis; pulse height analysers; radioisotope scanning and imaging; FASTBUS boards; LOR address; PC-based multichannel analyzer; PET camera simulator; Sherbrooke positron emission tomography; avalanche photodiode detectors; calibration; coincident energy spectra; computer controlled scanning table; detection channels; digital-to-analog converters; energy-validated coincident events; front-end cassettes; high-resolution PET camera; histogramming memory; lines-of-response addresses; multiparametric data acquisition; multispectral data acquisition; onboard registers; tomographic data; Analytical models; Avalanche photodiodes; Cameras; Computational modeling; Computer simulation; Data acquisition; Detectors; Fastbus; Object detection; Positron emission tomography;
Journal_Title :
Nuclear Science, IEEE Transactions on
