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OSEM reconstructed (8 subsets, 10 iterations) disks using simulated triple-camera HCB collimation with helical-path acquisition. (a) central sagittal slice; (b) sagittal slice close to the edge of the phantom; (c) transaxial slice of the least sampled disk (i.e., the left-most disk in (a)). Profiles of the reconstructed images are included.
