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FIGURE 2. Planar images used to select reconstructed regions for SPECT images. (A and C) Early planar images. Line marked 63 in A is centerline in 128 matrix. Centerline passes through right and left external auditory canals. Region between lines 13 and 36 is reconstructed region on SPECT images, excluding salivary glands. (B and D) Delayed planar images. Similarly, centerline passes through both external auditory canals. Reconstructed region for delayed SPECT image is similarly selected between lines 13 and 36.
