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. Author manuscript; available in PMC: 2008 Aug 18.
Published in final edited form as: Med Phys. 2007 Mar;34(3):987–993. doi: 10.1118/1.2432071

Fig. 7.

Fig. 7

(a) Slice of an OSEM reconstruction of the hot-rod phantom performed using an interpolated system matrix with aperture 2. (b) The same reconstructed slice as is shown in (a) but following postprocessing with a Butterworth filter. (c) The same slice as is shown in (a) but from a reconstruction performed using apertures 2 and 4 and postprocessed with a Butterworth filter.