A new columnar CsI(Tl) scintillator for iQID detectors

Ling Han, Brian W. Miller, H. Bradford Barber, Vivek V. Nagarkar, Lars R. Furenlid

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

9 Scopus citations


A 1650 μm thick columnar CsI(Tl) scintillator for upgrading iQID detectors, which is a high-resolution photon-counting gamma-ray and x-ray detector recently developed at the Center for Gamma-Ray Imaging (CGRI), has been studied in terms of sensitivity, spatial resolution and depth-of-interaction effects. To facilitate these studies, a new frame-parsing algorithm for processing raw event data is also proposed that has more degrees of freedom in data processing and can discriminate against a special kind of noise present in some low-cost intensifiers. The results show that in comparison with a 450 μm-thickness columnar CsI(Tl) scintillator, the 1650 μm thick CsI(Tl) scintillator provides more than twice the sensitivity at the expense of some spatial resolution degradation. The depth-of-interaction study also shows that event size and amplitude vary with scintillator thickness, which can assist in future detector simulations and 3D-interactionposition estimation.

Original languageEnglish (US)
Title of host publicationMedical Applications of Radiation Detectors IV
EditorsHans N. Roehrig, Lars R. Furenlid, H. Bradford Barber
ISBN (Electronic)9781628412413
StatePublished - 2014
EventMedical Applications of Radiation Detectors IV - San Diego, United States
Duration: Aug 18 2014Aug 21 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherMedical Applications of Radiation Detectors IV
Country/TerritoryUnited States
CitySan Diego


  • Columnar CsI(Tl)
  • Depth of interaction
  • Frame parsing
  • IQID detector
  • Noise discrimination
  • Resolution
  • Sensitivity
  • Thick scintillator

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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