Nuclear magnetic resonance apparatus having semitoroidal rf coil for use in topical NMR and NMR imaging
Abstract
An improved nuclear magnetic resonance (NMR) apparatus for use in topical magnetic resonance (TMR) spectroscopy and other remote sensing NMR applications includes a semitoroidal radio-frequency (rf) coil. The semitoroidal rf coil produces an effective alternating magnetic field at a distance from the poles of the coil, so as to enable NMR measurements to be taken from selected regions inside an object, particularly including human and other living subjects. The semitoroidal rf coil is relatively insensitive to magnetic interference from metallic objects located behind the coil, thereby rendering the coil particularly suited for use in both conventional and superconducting NMR magnets. The semitoroidal NMR coil can be constructed so that it emits little or no excess rf electric field associated with the rf magnetic field, thus avoiding adverse effects due to dielectric heating of the sample or to any other interaction of the electric field with the sample.
- Inventors:
-
- Los Alamos, NM
- La Mesa, CA
- Albuquerque, NM
- Bryan, TX
- Issue Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- OSTI Identifier:
- 865860
- Patent Number(s):
- 4590427
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- DOE Contract Number:
- W-7405-ENG-36
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- nuclear; magnetic; resonance; apparatus; semitoroidal; rf; coil; topical; nmr; imaging; improved; tmr; spectroscopy; remote; sensing; applications; radio-frequency; produces; effective; alternating; field; distance; poles; enable; measurements; selected; regions; inside; particularly; including; human; living; subjects; relatively; insensitive; interference; metallic; located; rendering; suited; conventional; superconducting; magnets; constructed; emits; excess; electric; associated; avoiding; adverse; effects; due; dielectric; heating; sample; interaction; nmr imaging; rf coil; adverse effects; remote sensing; particularly suited; magnetic resonance; electric field; magnetic field; alternating magnetic; nuclear magnetic; selected regions; relatively insensitive; nmr measurements; improved nuclear; electric heat; resonance apparatus; field associated; including human; selected region; /324/505/
Citation Formats
Fukushima, Eiichi, Roeder, Stephen B. W., Assink, Roger A, and Gibson, Atholl A. V. Nuclear magnetic resonance apparatus having semitoroidal rf coil for use in topical NMR and NMR imaging. United States: N. p., 1986.
Web.
Fukushima, Eiichi, Roeder, Stephen B. W., Assink, Roger A, & Gibson, Atholl A. V. Nuclear magnetic resonance apparatus having semitoroidal rf coil for use in topical NMR and NMR imaging. United States.
Fukushima, Eiichi, Roeder, Stephen B. W., Assink, Roger A, and Gibson, Atholl A. V. Wed .
"Nuclear magnetic resonance apparatus having semitoroidal rf coil for use in topical NMR and NMR imaging". United States. https://www.osti.gov/servlets/purl/865860.
@article{osti_865860,
title = {Nuclear magnetic resonance apparatus having semitoroidal rf coil for use in topical NMR and NMR imaging},
author = {Fukushima, Eiichi and Roeder, Stephen B. W. and Assink, Roger A and Gibson, Atholl A. V.},
abstractNote = {An improved nuclear magnetic resonance (NMR) apparatus for use in topical magnetic resonance (TMR) spectroscopy and other remote sensing NMR applications includes a semitoroidal radio-frequency (rf) coil. The semitoroidal rf coil produces an effective alternating magnetic field at a distance from the poles of the coil, so as to enable NMR measurements to be taken from selected regions inside an object, particularly including human and other living subjects. The semitoroidal rf coil is relatively insensitive to magnetic interference from metallic objects located behind the coil, thereby rendering the coil particularly suited for use in both conventional and superconducting NMR magnets. The semitoroidal NMR coil can be constructed so that it emits little or no excess rf electric field associated with the rf magnetic field, thus avoiding adverse effects due to dielectric heating of the sample or to any other interaction of the electric field with the sample.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1986},
month = {Wed Jan 01 00:00:00 EST 1986}
}