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EJNMMI Physics
Fig. 2 | EJNMMI Physics

Fig. 2

From: The effect of calibration factors and recovery coefficients on 177Lu SPECT activity quantification accuracy: a Monte Carlo study

Fig. 2

a Percentage counts recovered and b percentage root mean square (%RMS) obtained from reconstructed images as a function of 3D OS-EM updates for different size spheres simulated inside a cylindrical phantom, as well as for the right and left kidney of a patient phantom with an object-to-background ratio of 13:1. c Percentage counts recovered and d %RMS calculations were repeated for simulations with an object-to-background ratio of 6:1. Reconstruction included CT-based attenuation correction, effective source scatter estimation(ESSE) scatter correction and collimator detector response (CDR) compensation

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