Molecular dynamics dependence of overhauser-enhanced magnetic resonance imaging (OMRI): An ESR study

V. Meenakumari, A. Milton Franklin Benial, Kazuhiro Ichikawa, Ken Ichi Yamada, A. Jawahar, Hideo Utsumi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Electron spin resonance (ESR) and Overhauser-enhanced magnetic resonance imaging (OMRI) studies were carried out for various concentrations of 14N-labeled 3-carbamoyl-2,2,5,5-tetramethyl-pyrrolidin-1-yloxy (carbamoyl-PROXYL) in pure water. The ESR parameters and Overhauser enhancement factor were estimated. Line width and line shape analysis confirm that the lines broaden in proportion to agent concentration and are approximately Lorentzian. The contribution of Lorentzian component and Overhauser enhancement factor (OEF) attain maximum in the range of 2.5-3 mM concentration. The agent concentration was optimized as 2.5-3 mM for free radical imaging. The observed spin-spin relaxation time (T2e) decreases with increasing concentration. The isotropic g-values were obtained.

Original languageEnglish
Title of host publicationSolid State Physics - Proceedings of the 57th DAE Solid State Physics Symposium 2012
Pages952-953
Number of pages2
DOIs
Publication statusPublished - Mar 15 2013
Event57th DAE Solid State Physics Symposium 2012 - Bombay, Mumbai, India
Duration: Dec 3 2012Dec 7 2012

Publication series

NameAIP Conference Proceedings
Volume1512
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other57th DAE Solid State Physics Symposium 2012
CountryIndia
CityBombay, Mumbai
Period12/3/1212/7/12

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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