Table 1:

Multivariate analysis of MR perfusion parameters for PTA, thyroid gland, and cervical lymph node^{^a}

	PTA	Thyroid Gland	Lymph Node	ANOVA (P Value)
Peak enhancement, AU	360.9 ± 87	214 ± 47	305.3 ± 153	PTA vs thyroid: <.001^{^b}
Peak enhancement, AU	360.9 ± 87	214 ± 47	305.3 ± 153	PTA vs LN: .38
Time-to-peak (seconds)	35.2 ± 12.8	48.7 ± 22.6	64.4 ± 35	PTA vs thyroid: .001^{^b}
Time-to-peak (seconds)	35.2 ± 12.8	48.7 ± 22.6	64.4 ± 35	PTA vs LN: <.001^{^b}
Wash-in, AU	7.5 ± 2.6	3.9 ± 1.2	4.4 ± 1.9	PTA vs thyroid: <.001^{^b}
Wash-in, AU	7.5 ± 2.6	3.9 ± 1.2	4.4 ± 1.9	PTA vs LN: <.001^{^b}
Washout, AU	0.80 ± 0.24	0.43 ± 0.17	0.58 ± 0.31	PTA vs thyroid: <.001^{^b}
Washout, AU	0.80 ± 0.24	0.43 ± 0.17	0.58 ± 0.31	PTA vs LN: .016^{^b}