Concurrent Dual Contrast for Cellular Magnetic Resonance Imaging Using Gadolinium Oxide and Iron Oxide Nanoparticles

Table 2

Effect of Gd₂O₃ incubation concentration on MR relaxation times and cell function.

Incubation medium [Gd] (mM)	Measured MR relaxation times		Cell function assays
	T 1 (ms)	T 2 (ms)	Viability (%)	Proliferation (%)
0	2168±161	83.5±10.3	100±9	100±16
0.002	1920±187	69.4±10.5	105±14	104±21
0.02	1650±224	50.3±9.1	112±18	81±9
0.1	950±137	15.4±3.6	95±21	76±13
0.2	630±91	12.6±2.7	84±3	61±5^*

^*𝑃<0.05, significantly different from control (0 mM).