. Author manuscript; available in PMC: 2012 Dec 1.

Published in final edited form as: Nanomedicine. 2011 Apr 8;7(6):1001–1008. doi: 10.1016/j.nano.2011.03.007

Table 1.

Molecular weights and relaxivity of dendrimer-based MR contrast agents.

Dendrimer	Theoretical molecular weight (kDa)^a	Molecular size measured by GPC		r1(mM⁻¹s⁻¹)^b
Dendrimer	Theoretical molecular weight (kDa)^a	Estimated molecular weight (kDa)	Diameter (nm)	r1(mM⁻¹s⁻¹)^b
PEG2k-PAMAM (G5)	262	100	24	30
PEG5k-PAMAM (G4)	321	122	27	23
PEG2k- PAMAM (G4)	147	66	19	26
Ac-PAMAM (G4)	25	36	13	25
PAMAM (G4)^c	14	-	-	31
Gd-DTPA^c	-	-	-	4.3

without Gd-DTPA.

37°C, 0.8 T.; r²>0.998 for all measurements.

from reference [25].