Table 3.

In vivo MRI contrast effect of the MWCNT hybrids.^a

complex	B [T]	place	SI [%]	time	dose	ref.
MSC/Pol/MWCNT#Vittorio	7.1	MSC	77 (T2)	5 days	1 µg/mL	[22]
		MSC	106 (T1)		1 µg/mL
SPIO/oMWCNT#Wu	3	MCF-7 cells	9	3 h	100 µg/mL	[38]
			68		10 µg/mL
			100		0 µg/mL
		liver, mice	37	15–300 min	2.5 mg/kg body
		spleen, mice	75
CoFe2O4/oMWCNT#Wu	3	HeLa cells	15	3 h	100 µg/mL	[39]
			58		10 µg/mL
			100		0 µg/mL
oMWCNT#Ding	1.5	tumor in mice grown from MDA-MB231 cells	28	10 min	100 µg per tumor	[35]
			19	1 day
			15	7 days
PEI/PSS/oMWCNT#Yin	3	HeLa cells	55	6 h	0.08 mM Fe	[34]
			36
SPIO@Lac-Gly/PDDA/oMWCNT#Liu	3	intravenous injection, liver, mice	31	right after injection	10 mg/kg body	[32]
		intravenous injection, tumor, mice	117
PM-b-PEG/SPIO@oMWCNT#Liu	3	intravenous injection, liver, mice	61	right after injection	100 mg/kg body	[33]
		intravenous injection, tumor, mice	93

^aSI: Signal intensity enhancement after injection.