Table 1.

Values of Relaxivities R1 and R2 are Expressed in (Mm⁻¹.s⁻¹) Measured at 7T And Corrected (Second Lines) from ICP AES Elementary Analysis (Institut Physique Du Globe (IPG) ICP AES Facility, Paris); R2/R1 Ratio Is Calculated to Evidence the T1 Type MRI Contrast Agent (>1)

Contrast agents	r1	r2 c	r2/r1
DOTAREM	4.0	3.9	1.1
Gd(III)	9.5	5
NP1	6.47	9.03	1.40
6.43	9.01	1.40
NP2	8.98	12.35	1.38
8.49	12.23	1.44
NP3	9.79	14.29	1.46
9.89	14.26	1.44