J Med Phys Close
 

Figure 12: The reconstructed images of cold spheres in hot background phantom in four situations: (a) before correction, (b) corrected by six-energy window method, and (c) corrected by four-energy window method together with (d) the image obtained from the primary photons, by considering both the photopeak windows

Figure 12: The reconstructed images of cold spheres in hot background phantom in four situations: (a) before correction, (b) corrected by six-energy window method, and (c) corrected by four-energy window method together with (d) the image obtained from the primary photons, by considering both the photopeak windows