GSO depth of interaction detector for PET

S. Yamamoto*, H. Ishibashi

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

2 Citations (Scopus)


We have developed a GSO depth of interaction detector. Three GSO scintillators with different concentration of Ce were chosen and stacked along depth of interaction direction and optically coupled to a photomultiplier tube (PMT) or a position sensitive photomultiplier tube (PSPMT). In the beginning, pulse shape, light output and zero-cross time were measured so as to select a proper combination of GSO scintillators with different concentrations of Ce. Selecting three GSO scintillators with different concentration of Ce, a single stacked GSO/PMT depth of interaction detector was fabricated for estimating the possibility of this method. Using the zero-cross time analysis, three peaks correspond to decay times of the three GSO scintillator were obtained. Finally, a GSO/PSPMT depth of interaction block detector was fabricated and tested. The block detector consists of 7×7 matrix of GSO scintillators which have three layers of different concentrations of Ce optically coupled to a PSPMT. The pulse shape analysis was used for determination of depth of interaction direction while the Anger logic was used for transaxial and axial directions. Good separations were obtained in depth of interaction direction as well as transaxial and axial direction. These results indicate that the GSO block detector may become one solution for developing a positron emission tomograph (PET) with depth of interaction detection capability.

Original languageEnglish
Number of pages5
Publication statusPublished - 1997
Externally publishedYes
EventProceedings of the 1997 IEEE Nuclear Science Symposium - Albuquerque, NM, USA
Duration: 1997 Nov 91997 Nov 15


ConferenceProceedings of the 1997 IEEE Nuclear Science Symposium
CityAlbuquerque, NM, USA

ASJC Scopus subject areas

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


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