Resolution improvement using a fiber plate for a small field-of-view NaI(Tl) gamma camera

S. Yamamoto*

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review


To improve the spatial resolution of small field-of-view gamma camera composed of a NaI(Tl) scintillator and a position sensitive photo-multiplier tube (PSPMT), An NaI(Tl) scintillator with fiber plate light output was tried and was compared the performance with that with conventional glass plate light output. Since the fiber plate limits the scintillation light distribution and make it narrower, spatial resolution is improved. Using the 20mm × 20mm, 2mm thick NaI(Tl) scintillators with glass plate and with fiber plate light outputs, performance was measured and compared. Using the fiber plate, the scintillation light output was 35% smaller than that with glass plate. The average spatial resolution with fiber plate was 0.98mmFWHM while that with glass plate was 1.67mmFWHM for 122keV, Co-57 gamma photons. Although the light output was decreased, the spatial resolution was dramatically improved. These results indicate that the NaI(Tl) with Tiber plate light output is promising for PSPMT based small filed-of-view gamma cameras.

Original languageEnglish
Pages (from-to)2557-2560
Number of pages4
JournalIEEE Nuclear Science Symposium Conference Record
Publication statusPublished - 2004
Externally publishedYes
Event2004 Nuclear Science Symposium, Medical Imaging Conference, Symposium on Nuclear Power Systems and the 14th International Workshop on Room Temperature Semiconductor X- and Gamma- Ray Detectors - Rome, Italy
Duration: 2004 Oct 162004 Oct 22

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging


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