Development of a 1-dimensional sharing block detector using dual PMTs for PET

S. Yamamoto*, N. Shimura, H. Ishibashi

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review


We proposed and tested a 1-dimentional sharing block detector using dual photo-multiplier tubes (PMT). The detector consists of scintillator blocks and dual PMTs. The dual PMTs are optically coupled on the scintillator blocks overlapping in one dimensionaily. With this configuration, the scintillator size of the block detector can be reduced to be half of the conventional block detector in one direction and Isotropic spatial resolution can be obtained in transaxial and axial directions using commercially available dual PMTs. First, we measured the position and energy response for minimum configuration; one GSO block and two dual PMTs. The size of a single GSO was 2.9mm × 2.9mm × 20mm. The scintillators were arranged in 8 × 8 matrix with multi-layer optical film inserted partly between scintillators to obtain the resolved position response. We could obtain good position and energy responses with this configuration. Next, we fabricated a 1-D sharing block detector with 5 GSO blocks and 6 dual PMTs. With this configuration, we also obtained reasonable position and energy responses. These results indicated that the proposed 1-D sharing Mock detector will be a promising solution for developing high resolution or low cost PET systems.

Original languageEnglish
Pages (from-to)3366-3369
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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