TABLE 2

Maximal and Mean Change in 20-Segment Bull's Eye Maps of Simulated and Phantom Acquisitions

ScanMaximal change* (%)Mean change (%)
Simulation phantom6 mm31.7
12 mm103.2
Simulation phantom (no prefilter)6 mm41.1
12 mm124.3
Physical phantomAcquired 8-mm oblique41.1
  • * Maximal and mean change in bull's eye map before and after correction of artificial motion in each phantom study. Measurements were also performed on simulated phantom without prefilter before backprojection to better demonstrate impact of motion effect.