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Automated data acquisition and analysis for evaluation of PET detector units

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2 Author(s)
Johnston, B.D. ; General Electric Med. Syst., Milwaukee, MI, USA ; McDaniel, D.L.

In order to quickly evaluate detector units prior to incorporation into a positron emission tomography (PET) scanner, an automated method for measuring the critical characteristics of detector units was developed. The procedure uses annihilation radiation (68Ge) to measure timing and energy resolution, count rate uniformity, and position encoding. Several detector units are connected to a multiplexor, allowing sequential data collection from the individual detector units. Data from a detector's photomultiplier tubes are collected using standard Nuclear Instrumentation Modules (NIMs) electronics, and computer automated measurement and control (CAMAC) analog-to-digital converters and scalers. Acquisition is controlled by a Macintosh computer running LabVIEW. Data are automatically transferred to a Sun workstation for analysis. This system has been used to evaluate several different detector units, including a six by six bismuth germanate (BGO) crystal array mounted on two Hamamatsu Photonics R1548 photomultiplier tubes

Published in:

Nuclear Science Symposium and Medical Imaging Conference, 1992., Conference Record of the 1992 IEEE

Date of Conference:

25-31 Oct 1992