TABLE I.

Computation time (τ) and reconstruction quality measures – correlation coefficient (ρ) for numerical and contrast to noise ratio (CNR) for XACT experimental studies

View	MB-XACT						MF-XACT				XACT Experiment
	BP		Unreg-LSQR		Lap-LSQR		MF-LSQR		MBP		MF-LSQR		MBP		BP
	P	τ (s)	P	τ (s)	P	τ (s)	P	τ (s)	P	τ (s)	CNR	τ (s)	CNR	τ (s)	CNR	τ (s)
360°	0.42	0.3	0.93	310	0.99	310	0.95	45	0.49	10	0.83	80	0.31	42	0.35	1.1
180°	0.07	0.2	0.93	160	0.99	160	0.95	35	0.39	8	0.70	55	0.27	27	0.30	0.7
120°	0.06	0.2	0.92	115	0.97	115	0.88	29	0.33	7	0.61	36	0.22	16	0.27	0.5