Relaxometry, magnetometry, and EPR evidence for three magnetic phases in the MR contrast agent MION-46L

被引:13
作者
Bulte, JWM
Brooks, RA
Moskowitz, BM
Bryant, LH
Frank, JA
机构
[1] NIH, Ctr Clin, Lab Diagnost Radiol Res, Bethesda, MD 20892 USA
[2] NINDS, Neuroimaging Branch, Bethesda, MD 20892 USA
[3] Univ Minnesota, Dept Geol & Geophys, Minneapolis, MN 55455 USA
基金
美国国家科学基金会;
关键词
superparamagnetic iron oxide; magnetic nanoparticles; relaxometry; antiferromagnetism; electron-spin relaxation;
D O I
10.1016/S0304-8853(98)00555-1
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Magnetization curves, EPR spectra, and T1 and T2 nuclear magnetic relaxation times versus Larmor frequency have been measured for the MRI contrast agent MION-46L. The resulting data can be successfully explained by adding paramagnetic and antiferromagnetic terms to the known superparamagnetic component. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:217 / 223
页数:7
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