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Bi4Ge3O12 (BGO) is a commonly used scintillating crystal for Positron Emission Tomography detector (PET) due to its relatively high Z and high density. In order to finalize the crystal size of BGO block unit for our PET system, the detection efficiency, energy resolution and the linearity have been studied for three types of BGO rectangular detector units with the dimension of 20×20×10 mm3, 20×20×20 mm3 and 20×20×30 mm3 respectively. The light from the BGO is readout by the photomultiplier of HAMAMATSU R1213 of which, peak sensitivity matches well with wavelength of the maximal emission of the crystal.
Bi4Ge3O12 (BGO) is a commonly used scintillating crystal for Positron Emission Tomography detector (PET) due to its relatively high Z and high density. In order to finalize the crystal size of BGO block unit for our PET system, the detection efficiency, energy resolution and the linearity have been studied for three types of BGO rectangular detector units with the dimension of 20 × 20 × 10 mm3, 20 × 20 × 20 mm3 and 20 × 20 × 30 mm3 respectively. The light from the BGO is readout by the photomultiplier of HAMAMATSU R1213 of which, peak sensitivity matches well with wavelength of the maximal emission of the crystal.