Table 3 Relaxivity properties, 3 T MRI.

From: Iron oxide nanoparticles as positive T1 contrast agents for low-field magnetic resonance imaging at 64 mT

Sample

r1, MRI (L mmol−1 s−1) 21.5 °C

r2, MRI (L mmol−1 s−1) 21.5 °C

r2/r1, MRI (L mmol−1 s−1) 21.5 °C

A

1.5

67.7

44.9

B

5.3

93.1

17.4

C

1.2

113.7

92.5

D

2.9

181.3

62.3

Ferumoxytol

6.9

87.9

12.8

Ferumoxides

4.5

170.4

37.6

Gd-BOPTA

5.2

5.9

1.1

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