Development of a prototype detector using APD-arrays coupled with pixelized Ce:GAGG scintillator for high resolution radiation imaging

Kei Kamada, Kenji Shimazoe, Shigeki Ito, Masao Yoshino, Takanori Endo, Kousuke Tsutsumi, Jun Kataoka, Shunsuke Kurosawa, Yuui Yokota, Hiroyuki Takahashi, Akira Yoshikawa

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

A novel digital PET scanner based on Time over Threshold method is developed. The positron emission tomography (PET) is composed of 144channel Ce:Gd3Al2Ga3O12 (GAGG)-Avaranche photodiode (APD) detector arrays individually coupled with custom designed Time over Threshold (ToT) application-specific integrated circuit (ASIC) to realize the high count rate and good spatial resolution. Such an imaging system provides a simple front-end circuit and flexible digital signal processing like multiplexing such as a pulse train method. The measured energy resolution of the detector system was 6.7% for the 511 keV peak, and 4.25 ns time resolution was measured with a single detector module. The measured spatial resolution for a point source was 1.37 mm FWHM for our initial data with a columnar 22Na source.

Original languageEnglish
Article number6722988
Pages (from-to)348-352
Number of pages5
JournalIEEE Transactions on Nuclear Science
Volume61
Issue number1
DOIs
Publication statusPublished - 2014 Feb

Keywords

  • Avalanche photodiode (APD)
  • Positron emission tomography (PET)
  • Scintillator

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Electrical and Electronic Engineering

Fingerprint

Dive into the research topics of 'Development of a prototype detector using APD-arrays coupled with pixelized Ce:GAGG scintillator for high resolution radiation imaging'. Together they form a unique fingerprint.

Cite this