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. Author manuscript; available in PMC: 2013 Jun 26.
Published in final edited form as: IEEE Trans Med Imaging. 2010 Sep 27;30(2):391–400. doi: 10.1109/TMI.2010.2080282

Fig. 13.

Fig. 13

An energy spectrum from an 8 × 8 array of l×l×l mm LSO-PSAPD detector. The gain is calibrated per crystal and the resulting energies combined to form the spectrum of the whole detector. The energy resolution is l0.9±0.1% FWHM and the lutetium X-ray escape energies are visible in the lower energy side of the photopeak.