| Left top | : the anterior and posterior projections of the SPECT images. |
| Left middle | : the anterior and posterior projections resulting from QPlanar estimation of organ activities. |
| Left bottom | : difference images of the estimated and SPECT projections. |
| Right top | : comparison profiles through the SPECT and QPlanar estimated anterior projections. |
| Right bottom | : comparison of profiles through the SPECT and QPlanar estimated posterior projections. |
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