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FIGURE 11. Reconstructed coronal images of ⁶⁸Ge uniform-cylinder phantom without (A) and with (B) normalization applied. (A) Unnormalized (i.e., uncorrected) image has obvious artifacts attributable to differences in sensitivities between direct and cross planes and presence of separate rings of block detectors. (B) Appropriate normalization virtually eliminates these and other artifacts related to nonuniformity of scanner response.

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