Table 1.

Physicochemical characteristic of IONPs.

Type of IONPs	Core size ± SD (nm)	Hydrodynamic size ± SD (nm)	T 2-relaxivity (mM−1·s−1)	Surface zeta potential (mV)
MNCb	15 ± 2	65.4 ± 31.6	300	−18.5
MNRd	20 ± 7 (length), 3 ± 1 (diameter)	120.4 ± 71.1	51	−19.0
MNCl	40 ± 10	100.0 ± 42.3	104	−12.0