1.
J Biomed Nanotechnol
; 10(11): 3392-6, 2014 Nov.
Article
in English
| MEDLINE
| ID: mdl-26000397
ABSTRACT
Superparamagnetic iron oxide nanoparticles have recently been developed as T2 contrast agents for magnetic resonance imaging. Here we report the dependence of the phase relaxivity, r2, on the particle shape. We show that the size dependence of the relaxivity for spherical particles can be generalized to spheroidal particles. In addition, we show that the saturation of relaxivity above a certain size observed in spherical particles does not occur in the spheroidal particles investigated.
Subject(s)
Contrast Media/analysis , Contrast Media/chemistry , Magnetic Resonance Imaging/methods , Magnetite Nanoparticles/analysis , Magnetite Nanoparticles/chemistry , Magnetic Resonance Imaging/instrumentation , Particle Size , Phantoms, Imaging , Reproducibility of Results , Sensitivity and Specificity , Structure-Activity Relationship
2.
Med Educ
; 39(5): 515-6, 2005 May.
Article
in English
| MEDLINE
| ID: mdl-15842696