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EJNMMI Physics
Fig. 9 | EJNMMI Physics

Fig. 9

From: NEMA NU 1-2018 performance characterization and Monte Carlo model validation of the Cubresa Spark SiPM-based preclinical SPECT scanner

Fig. 9

SPECT reconstructed spatial resolution with scatter evaluated with a mouse-sized NEMA triple line source scatter phantom in MPH collimator measurement (left), SPH collimator measurement (middle), and SPH collimator simulation (right). The images present the central 3.5 mm-thick transverse slice from the MLEM reconstruction used in calculating the radial, tangential, and central resolution. Images were normalized by the maximum displayed pixel value, resulting in intensity values with arbitrary units (a.u.). The MPH collimator offers superior tomographic resolution compared to the SPH collimator when scanning relatively small distributions of radioactivity

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