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. Author manuscript; available in PMC: 2011 Sep 21.
Published in final edited form as: Phys Med Biol. 2010 Aug 27;55(18):5483–5497. doi: 10.1088/0031-9155/55/18/014

Table 3.

Comparison of mean of absolute errors with and without registration to SPECT images after 5 iterations.

Without registration 1hr 5hr 24hr 72hr 144hr
x (pixel) 2.46 0.21 0.18 0.20 0.23 0.27
z (pixel) 2.18 0.42 0.28 0.36 0.43 0.51
xy (degree) 2.49 2.54 2.47 2.51 2.53 2.55
xz (degree) 2.33 0.30 0.26 0.24 0.34 0.41
yz (degree) 2.59 2.49 2.51 2.54 2.55 2.57