PET image reconstruction with a system matrix containing point spread function derived from single photon incidence response<xref ref-type="fn" rid="cpb141481fn1">*</xref>

PET image reconstruction with a system matrix containing point spread function derived from single photon incidence response*

Fan Xin^a),^b), Wang Hai-Peng^a),^b), Yun Ming-Kai^a),^c), Sun Xiao-Li^a),^b), Cao Xue-Xiang^a),^c), Liu Shuang-Quan^a),^c), Chai Pei^a),^c), Li Dao-Wu^a),^c), Liu Bao-Dong^a),^c), Wang Lu^a),^b), Wei Long^a),^c),^†

Fig.#cod#x00A0;14. a The chosen ROI method. b Hot sphere contrast recovery hot sphere ROI mean divided by the background ROI mean curve versus the sphere diameter. c The percent background variability background ROI standard deviation divided by the background ROI mean versus the sphere diameter.