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. Author manuscript; available in PMC: 2011 Jun 28.
Published in final edited form as: IEEE Trans Nucl Sci. 2009 Jun 1;56(3):671–676. doi: 10.1109/TNS.2009.2015446

Fig. 1.

Fig. 1

Sample transaxial slices of activity (top row) and attenuation (bottom row) distributions from each of the 4-D NCAT phantoms (from left to right column) represent anatomical variations among a patient population.