Table 1.

Relaxivity collection values found in the literature as a function of nanoparticle diameter and coating.

Contrast Agents [31]	Material	Coating	D(TEM) nm	r1	r2	r2/r1
This work	CoFe2O4	Folic acid	17(4)	10.3	479	46
Lee et al. [17]		2,3-Dimercaptosuccinic acid			172
Schultz-Sikma et al. [32]		Silica	7		142
Joshi et al. [15]		11-aminoundecanoic acid	15		301
Kim et al. [18]		DMSA	8	6	392	62
Venkatesha et al. [33]		Chitosan	6		32
Liu et al. [34]		Citrate	37.89	27.8	75.1	2.7
Sinerem®	γ-Fe2O3	Dextran	4–15	9.9	65	7
Resovist®		Carboxydextran	4–15	9.7	189	19
VSOP_C184®		Citric acid	5	14	33.4	2
Endorem®		Dextran	4–15	10.1	120	12