Preliminary evaluation of compact detectors for hand-held gamma cameras

Francesco Cusanno, F. Garibaldi, S. Colilli, M. Gricia, F. Giuliani, M. Lucentini, F. Santavenere, G.M. Urciuoli, E. Cisbani, R. Pani, R. Pellegrini, M.N. Cinti, R. Scafe

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Abstract

Hamamatsu Photonics has recently developed a new generation of compact Position Sensitive PhotoMultiplier Tubes (PSPMT) based on metal channel dynode charge multiplication technology. The R5900 family now has a range of compact tubes that differ in the structure of the anode. The models considered in this paper, the C8 and M16, also differ in the photocathode active area. The C8 has a crossed plate anode configuration consisting of 4X + 4Y strips and an active area of 22 × 22 mm2while the M16 has a 4 × 4 anode array with a smaller active area of 18 × 18 mm2. In this paper we report our evaluation of the C8 and the M16 tubes for clinical imaging applications such as a hand-held gamma probe, multi-PSPMT camera and for tomographic rings. To this aim, measurements of pulse height uniformity, inter-channel gain variation and anode cross talk were performed using a light source coupled to a 1 mm diameter optical fiber. Finally, the PSPMTS were optically coupled to three CsI(T1) scintillating arrays with pixel size ranging between 1.5 × 1.5 mm2and 4.2 × 4.2 mm2to compare the imaging properties.
Original languageEnglish
Pages (from-to)65 - 70
Number of pages6
JournalPhysica Medica
Volume20
Issue number2
Publication statusPublished - Apr 2004
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Biophysics
  • Radiology Nuclear Medicine and imaging
  • Physics and Astronomy(all)

Cite this

Cusanno, F., Garibaldi, F., Colilli, S., Gricia, M., Giuliani, F., Lucentini, M., ... Scafe, R. (2004). Preliminary evaluation of compact detectors for hand-held gamma cameras. Physica Medica, 20(2), 65 - 70.