Reduction of Collimator Correction Artefacts with Bayesian Reconstruction in Spect

Table 2

Reconstruction times with Dell Optiplex 755.2×2.33 GHz processors and 8 GB RAM of the Veenstra Instruments’ SPECT-phantom for the five different reconstruction methods: OSEM without collimator correction (OSEM NORR), OSEM reconstruction with collimator correction (OSEM RR), Median root prior (MRP), Quadratic smoothing prior (SMOOTH), and Bowsher prior (AMAP).

Method	OSEM NORR	OSEM RR	MRP	SMOOTH	AMAP
Time (min)	3.0	3.8	7.0	4.4	4.3