I have attempted to align the liver in the attenuation scans from the 2/27
and the 4/23 studies here.
The red overlays are from the respective rest emission scans.
Notice how much more inferior (toward the patient's feet) the
heart is in the 2/27 rest scan. (Either the liver was more superior on 2/27
or the heart was more inferior, I can't tell) This means that the 2/27 scan
had a more severe effect from the shadow of the liver, thus explaining the
larger effect on the stress bullseyes from the 2/27 scan.

