Improved iterative reconstruction method for Compton imaging using median filter
Fig 6
Changes in average and CV of HS, LE, CS1, CS2, and BG of the reconstructed images for each iterative algorithm (OS-EM: blue, MRP-EM: red and SOE: green). The x-axis value (iteration number) of SOE is 10 times greater than that of OS-EM and MRP-EM. The average values (CV) of HS, LE, CS1, CS2, and BG for the analytical method were 1.0×10−4 (6.8%), 4.1×10−5 (10%), 1.6×10−5 (36%), 1.0×10−5 (73%), and 9.3×10−6 (65%), and those for BP were 6.8×10−5 (3.6%), 3.0×10−5 (12%), 4.1×10−5 (3.0%), 3.7×10−5 (4.8%), and 1.3×10−5 (23%).