Table 3.

Data obtained with FBP and SAFIRE reconstruction in sensitometry module of Catphan 600

	Air	PMP	LDPE	Polystyrene	Acrylic	Delrin	Teflon
Nominal CT Number	‐1000	‐200	‐100	‐35	120	340	990
FBP B31s	$-960.8$	$-175.8$	$-87.5$	$-29.1$	118.8	319.2	904.2
SAFIRE I31s S1	$-960.9$	$-175.0$	$-88.0$	$-28.8$	118.9	318.6	904.5
SAFIRE I31s S3	$-960.7$	$-174.3$	$-88.5$	$-29.4$	118.8	318.6	903.7
SAFIRE I31a S5	$-960.5$	$-174.9$	$-88.2$	$-29.3$	118.6	318.6	904.7