Table III.

T2, T2* and T1 relaxation values in the phantom for the three doping conditions. Parentheses indicate the value was a fixed parameter in the model. High values for the T2* up to 500 are likely poorly estimated as the TE range was too small for a T2* of this value to exhibit any significant change

Model	Gadolinium		None		Ferumoxides
	${\left({\nu }_1^{\ast }\right)}^{-1}$(ms)	${\nu }_2^{-1}$(ms)	${\left({\nu }_1^{\ast }\right)}^{-1}$(ms)	${\nu }_2^{-1}$(ms)	${\left({\nu }_1^{\ast }\right)}^{-1}$(ms)	${\nu }_2^{-1}$(ms)
(i)	-	-	-	-	-	-
(ii)	-	(12)	-	(12)	-	(12)
(iii)	500	-	500	-	13.4	-
(iv)	299	(12)	360	(12)	13.1	(12)
(v)	280	10.4	369	9.5	13.0	6.3
(vi)	218	11.2	200	11.1	13.4	5.7
	${\mu }_1^{-1}$(ms)	${\mu }_2^{-1}$(ms)	${\mu }_1^{-1}$(ms)	${\mu }_2^{-1}$(ms)	${\mu }_1^{-1}$(ms)	${\mu }_2^{-1}$(ms)
(vi)	483	191	1830	166	144	115