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SSPM Based Radiation Sensing: Preliminary Laboratory and Clinical Results

TitleSSPM Based Radiation Sensing: Preliminary Laboratory and Clinical Results
Publication TypeJournal Article
Year of Publication2011
AuthorsKonnoff, D. C., T. K. Plant, and E. Shiner
JournalRadiation Measurements
Pagination76 - 87
Date Published01/2011
Keywordsclinical radiotherapy, diagnostic dosimetry, environmental radiation sensing, medical imaging, solid state photomultiplier

Recent Solid State Photomultiplier (SSPM) technology has matured, reaching a performance level that is suitable for replacement of the ubiquitous photomultiplier tube in selected applications for environmental radiation monitoring, clinical dosimetry, and medical imaging purposes. The objective of this work is low signal level laboratory and high signal level clinical testing of the Hamamatsu MPPC (S10362-11-050C), Photonique SSPM (0810G1), and Voxtel SiPM (SQBF-EKAA/SQBF-EIOA) SSPMs coupled to different inorganic scintillator crystals (Prelude 420, BGO), inorganic doped glass scintillator material SiO2:Cu2+ and organic BCF-12 plastic scintillating fibers, used as detector elements. Plastic Optical Fibers (POFs) and Glass Optical Fibers (GOFs) are used as signal conduits for laboratory and clinical testing. Further, reduction of electron-beam-generated Cerenkov light in optical fibers is facilitated by the inclusion of metalized air-core capillary tubing between the BCF-12 plastic scintillating fiber and the POF.

In a clinical setting dose linearity, percent depth dose, and angular measurements for 6 MV/18 MV photon beams and 9 MeV electron beams are compared with and without the use of the air-core capillary tubing for BCF-12 plastic scintillating fiber. These same measurements are repeated for SiO2:Cu2+ scintillator material without air-core capillary tubing.

Short TitleRadiation Measurements