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Table 4 Values of maximum, minimum, metal-free region TV, and NPE in reconstructions of bag #4

From: A projection-domain iterative algorithm for metal artifact reduction by minimizing the total-variation norm and the negative-pixel energy

Iterations β1 β2 Min Max TV NPE
0, raw FBP NA NA −0.1868 1.3204 1379.1 1.9616
1000 0.004 0 −0.0757 1.2775 1006.9 0.4434
1000 0 5 −0.0155 1.3992 1226.9 0.1255
1000 0.004 5 −0.0164 1.4060 1062.4 0.1379