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. Author manuscript; available in PMC: 2011 Apr 13.
Published in final edited form as: J Nucl Med. 2009 Jul 17;50(8):1307–1314. doi: 10.2967/jnumed.108.060079

TABLE 2.

Mean and SD of Spatial Resolution Measurements Derived from Repeated Cylinder Acquisitions

Scanner Acquisition mode Mean FWHM (mm) SD of FWHM (mm) Reconstruction parameter
Discovery RX 2D 7.89 (n =35) 0.12 OSEM; 2 iterations, 21 subsets; 5-mm gaussian filter
Discovery RX 3D 8.10 (n =28) 0.09 3D OSEM; 2 iterations, 21 subsets; 5-mm gaussian filter
Discovery LS 2D 8.54 (n =30) 0.16 OSEM; 2 iterations, 21 subsets; 5-mm gaussian filter
Discovery LS 3D 5.75 (n =29) 0.58 3DRP; transaxial ramp, 4 mm
HRRT 3D 4.48 (n =19) 0.24 3D OSEM; 6 iterations, 16 subsets; 2-mm gaussian filter

OSEM denotes reconstruction algorithm discussed in the study by Hudson and Larkin (8), and 3DRP denotes analytic reprojection reconstruction algorithm discussed in the study by Kinahan and Rogers (9).