Table 1.

Optimum parameter selections for each dataset.

Data	TV algorithm	Proposed algorithm
	λ	λ 1	λ 2
Phantom without noise	0.0005	0.0005	0.0005
Phantom with noise	0.0015	0.001	0.0006
Human bone	0.001	0.001	0.001
Rat	0.0005	0.001	0.0005