Title :
Design and performance of an acquisition and control system for a positron camera with novel detectors
Author :
Symonds-Tayler, J.R.N. ; Reader, A.J. ; Flower, M.A. ; Austin, V.E. ; Visvikis, D. ; Ott, R.J.
Author_Institution :
Joint Dept. of Phys., R. Marsden NHS Trust, Surrey, UK
Abstract :
A Sun-based data acquisition and control (DAQ) system has been designed for PETRRA, a whole-body positron camera using large-area BaF 2-TMAE detectors. The DAQ system uses a high-speed digital I/O card (S16D) installed on the S-bus of a SPARC10 and a specially-designed Positron Camera Interface (PCI), which also controls both the gantry and horizontal couch motion. Data in the form of different types of 6-byte packets are acquired in list mode. Tests with a signal generator show that the DAQ system should be able to cater for coincidence count-rates up to 100 kcps. The predicted count loss due to the DAQ system is ~13% at this count rate, provided asynchronous-read based software is used. The list-mode data acquisition system designed for PETRRA could be adapted for other 3D PET cameras with similar data rates
Keywords :
biomedical equipment; data acquisition; electron detection; input-output programs; medical diagnostic computing; motion control; physical instrumentation control; position control; positron emission tomography; 3D PET cameras; DAQ system; PETRRA; S-bus; SPARC10; Sun-based data acquisition system; asynchronous-read based software; control system; gantry motion; high-speed digital I/O card; horizontal couch motion; large-area BaF2-TMAE detectors; list-mode data acquisition system; positron camera interface; whole-body positron camera; CMOS logic circuits; Cameras; Cancer; Control systems; Coprocessors; Data acquisition; Detectors; Positrons; Programmable logic arrays; Programmable logic devices;
Conference_Titel :
Nuclear Science Symposium, 1996. Conference Record., 1996 IEEE
Conference_Location :
Anaheim, CA
Print_ISBN :
0-7803-3534-1
DOI :
10.1109/NSSMIC.1996.591686
