✦ LIBER ✦

Spin echo spectroscopic electron paramagnetic resonance imaging

✍ Scribed by Colin Mailer; Subramanian V. Sundramoorthy; Charles A. Pelizzari; Howard J. Halpern

Publisher: John Wiley and Sons
Year: 2006
Tongue: English
Weight: 799 KB
Volume: 55
Category: Article
ISSN: 0740-3194
DOI: 10.1002/mrm.20849

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The use of spin echoes to obtain spectroscopic EPR images (spectral–spatial images) at 250 MHz is described. The advantages of spin echoes—larger signals than the free induction decay, better phase characteristics for Fourier transformation, and decay shapes undistorted by instrumental dead time—are clearly shown. An advantage is gained from using a crossed loop resonator that isolates the 250‐W pump power by greater than 50 dB from the observer arm preamplifiers. The echo decay rates can be used to determine the oxygen content in solutions containing 1 mM trityl concentrations. Two‐ and three‐dimensional images of oxygen concentration are presented. Magn Reson Med, 2006. © 2006 Wiley‐Liss, Inc.

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