. 2014 Jun 17;8(7):7325–7332. doi: 10.1021/nn502393u

Table 1. Summary of PA T₁ and T₂ Relaxivities as a Function of Condition^a.

	H₂O		Tris buffer (pH 7.4)		after thermal annealing		addition of CaCl₂
	r₁	r₂	r₁	r₂	r₁	r₂	r₁	r₂
PA1	16.5 ± 0.5	34 ± 1	16 ± 2	30 ± 4	19.0 ± 0.6	37 ± 1	18.4 ± 0.2	40.0 ± 0.1
PA2	17.3 ± 0.8	39 ± 2	16.7 ± 0.2	32.2 ± 0.5	16.9 ± 0.2	28.6 ± 0.6	21.7 ± 0.1	45 ± 2
PA3	16.4 ± 0.6	30 ± 2	15.8 ± 0.5	25.3 ± 0.2	16.4 ± 0.6	25.2 ± 0.2	16.5 ± 0.8	25 ± 1
PA4	17 ± 1	31 ± 2	15.6 ± 0.1	25.3 ± 0.2	16.0 ± 0.1	25.2 ± 0.2	18 ± 1	25 ± 1

All measurements were obtained at 1.41 T and are measured in mM^–1 s^–1.

Table 1. Summary of PA T1 and T2 Relaxivities as a Function of Conditiona.