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. Author manuscript; available in PMC: 2009 Dec 28.
Published in final edited form as: IEEE Trans Med Imaging. 2008 Aug;27(8):1071–1083. doi: 10.1109/TMI.2008.918328

TABLE I.

Projection Accuracya(%RMSE) for Three Projectors

Projector 128 × 128 256 × 256 512 × 512 1024 × 1024
Ray-Driven 8.00 4.48 3.03 2.69
Distance-Driven 6.15 2.47 1.20 0.85
Rotate-and-Slant 6.26 2.58 1.21 0.84
a

Shepp-Logan phantom, versus analytically-computed volume integrals.