Readout electronics and data acquisition of a time of flight detector for positron emission tomography

J. Y. Yeom, R. Vinke, V. Spanoudaki, K. J. Hong, C. S. Levin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

A multi-element silicon photomultiplier (SiPM) based time-of-flight (ToF) block detector module for Positron Emission Tomography (PET) has been developed. The detector module is based on a 4 × 4 array of LYSO-SiPM elements (Hamamatsu MPPC S10931-050P), with individual bias supply and read out by individual wideband RF amplifier to maximize timing performance. Each output is digitized with a channel of the high speed CAEN V1742 (32 channels, 5 GHz sampling, 12-bit amplitude resolution) to acquire the raw waveform and extract relevant information. As the digitizer is unable to trigger on itself, a trigger board to output a fast pulse that triggers the digitizer whenever any pixel of the detector detects a signal, and process coincident events, has also been fabricated. To assess the performance of one of the modules, a 4 × 4 LYSO scintillator array (3 × 3 × 5 mm3 elements) was coupled to the SiPM photodetectors and energy resolution and timing resolution measurements were performed using a Ge-68 source. At 1.4 V overvoltage, the energy resolution, not corrected for saturation effects of the SiPM, varied from a minimum of 10.1 % to a maximum of 13.3 % with an average energy resolution of 11.4 ± 0.8 % across the 16 channels. With a reference detector (single 3 × 3 × 5 mm3 LYSO and Hamamatsu S10362-33), the average coincidence resolving time (CRT) across the detector module (16 pixels) was 211 ± 6 ps FWHM at 2.2 V overvoltage.

Original languageEnglish
Title of host publication2012 18th IEEE-NPSS Real Time Conference, RT 2012
DOIs
Publication statusPublished - 2012 Dec 1
Externally publishedYes
Event2012 18th IEEE-NPSS Real Time Conference, RT 2012 - Berkeley, CA, United States
Duration: 2012 Jun 92012 Jun 15

Publication series

Name2012 18th IEEE-NPSS Real Time Conference, RT 2012

Conference

Conference2012 18th IEEE-NPSS Real Time Conference, RT 2012
CountryUnited States
CityBerkeley, CA
Period12/6/912/6/15

    Fingerprint

ASJC Scopus subject areas

  • Information Systems

Cite this

Yeom, J. Y., Vinke, R., Spanoudaki, V., Hong, K. J., & Levin, C. S. (2012). Readout electronics and data acquisition of a time of flight detector for positron emission tomography. In 2012 18th IEEE-NPSS Real Time Conference, RT 2012 [6418163] (2012 18th IEEE-NPSS Real Time Conference, RT 2012). https://doi.org/10.1109/RTC.2012.6418163