Improved iterative reconstruction method for Compton imaging using median filter
Fig 5
Changes in RSS, ZNCC, and MI of the reconstructed image for each iterative algorithm (OS-EM: blue, MRP-EM: red and SOE: green). Lower values are preferable for RSS, and higher values are better for ZNCC and MI. The x-axis value (iteration number) of SOE is 10 times greater than that of OS-EM and MRP-EM. The RSS, ZNCC, and MI values of BP were 2.8×10−5, 0.35, and 0.43, respectively, and those of the analytical method were 2.0×10−5, 0.88, and 0.76, respectively.