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4634980 Nuclear magnetic resonance radio frequency antenna
Ma&wer~c Resonance Printed in rhe USA.
Imaging, Vol. 5, pp. I-X. All nghts reserved.
1987 Copyright
NEW
0
073C-725X/87 $3.00 + .OO 1987 Pergamon Journals Ltd.
PATENTS
This Section contains abstracts and, where appropriate, illustrations of recently issued United States patents and published patent applications filed from over 30 countries under the Patent Cooperation Treaty. This information was obtained from recent additions to the Pergamon PATSEARCH” online database in accordance with interest
profiles developed by the Editors. Further information about Pergamon PATSEARCH K can be obtained from Pergamon Orbit InfoLine Inc., 8000 Westpark Drive, McLean, Virginia 22102 U.S.A. Copies of complete patents announced in this Section are available from Pergamon Orbit InfoLine Inc. for $8 per copv. Payment with order is required. Orders outside North America add $2 for air postage. Order by patent numb& for Pergamon Orbit Infoiine only.
4634979 AUTOMATED NUCLEAR MAGNETIC RESONANCE IMAGE SYNTHESIS Stephen J Riederer, Duke University
James
N Lee assigned
to
Intrinsic parameters Tl, T2 and MO of the materials in a body under NMR examination are determined by conducting a small number of actual NMR measurements and analyzing the derived data, the measurements being made at different repetition and delay times. The intrinsic parameters are then used to synthesize images which simulate those which would have been generated using other delay and repetition times in an actual measurement process. A processing apparatus is disclosed which operates in real time, permitting an operator to interactively modify the delay and repetition times while observing successive displays which simulates measurements made using those times.
4634980 NUCLEAR MAGNETIC RESONANCE RADIO FREQUENCY ANTENNA George Misic, Aarn Lillo, John Patrick, Holland assigned to Picker International
G Nei Inc
A nuclear magnetic resonance radio frequency coil. The disclosed coil provides high frequency resonance signals for perturbing a magnetic field within the coil. The coil is impedance matched and tuned with adjustable capacitors. A balanced configuration is achieved with a coaxial cable chosen to phase shift an energization signal coupled to the coil. The preferred coil is a
thin metallic foil having a shorting conductor, four wing conductors, and uniquely shaped parallel cross conductors connecting the shorting and wing conductors. When mounted to a rf transmissive plastic substrate and energized the coil produces a homogeneous field within a region of interest the size of a patient head. A semicircular balanced feedbar arrangement is used to minimize undesired field contributions.
4635643 ASSAY METHOD FOR THE IN VIVO QUANTITATIVE DETERMINATION OF MINERAL CONTENT IN BONE Charles E Brown lege of Wisconsin
assigned to The Medical ColResearch Foundation Inc
An in vivo assay for quantifying the mineral content of bone comprises placing living bone into or adjacent to the coil of a nuclear magnetic resonance (NMR) spectrometer, recording a 3 1P NMR spectrum while the bone is stationary, and comparing the spectrum obtained with the NMR spectrum of a reference standard containing a known concentration of a reference compound. The assay can be used to diagnose and determine the efficacy of treatment of osteodystrophy if used in conjunction with radiographic densitometry to estimate the calcium content of the bone.
4636728 OFFSET GRADIENT FIELDS IN NUCLEAR MAGNETIC RESONANCE IMAGING SYSTEMS Russell Compton, Kramer assigned
Waldo S Hinshaw, David to Technicare Corporation
M
Imaging, Vol. 5, pp. I-X. All nghts reserved.
1987 Copyright
NEW
0
073C-725X/87 $3.00 + .OO 1987 Pergamon Journals Ltd.
PATENTS
This Section contains abstracts and, where appropriate, illustrations of recently issued United States patents and published patent applications filed from over 30 countries under the Patent Cooperation Treaty. This information was obtained from recent additions to the Pergamon PATSEARCH” online database in accordance with interest
profiles developed by the Editors. Further information about Pergamon PATSEARCH K can be obtained from Pergamon Orbit InfoLine Inc., 8000 Westpark Drive, McLean, Virginia 22102 U.S.A. Copies of complete patents announced in this Section are available from Pergamon Orbit InfoLine Inc. for $8 per copv. Payment with order is required. Orders outside North America add $2 for air postage. Order by patent numb& for Pergamon Orbit Infoiine only.
4634979 AUTOMATED NUCLEAR MAGNETIC RESONANCE IMAGE SYNTHESIS Stephen J Riederer, Duke University
James
N Lee assigned
to
Intrinsic parameters Tl, T2 and MO of the materials in a body under NMR examination are determined by conducting a small number of actual NMR measurements and analyzing the derived data, the measurements being made at different repetition and delay times. The intrinsic parameters are then used to synthesize images which simulate those which would have been generated using other delay and repetition times in an actual measurement process. A processing apparatus is disclosed which operates in real time, permitting an operator to interactively modify the delay and repetition times while observing successive displays which simulates measurements made using those times.
4634980 NUCLEAR MAGNETIC RESONANCE RADIO FREQUENCY ANTENNA George Misic, Aarn Lillo, John Patrick, Holland assigned to Picker International
G Nei Inc
A nuclear magnetic resonance radio frequency coil. The disclosed coil provides high frequency resonance signals for perturbing a magnetic field within the coil. The coil is impedance matched and tuned with adjustable capacitors. A balanced configuration is achieved with a coaxial cable chosen to phase shift an energization signal coupled to the coil. The preferred coil is a
thin metallic foil having a shorting conductor, four wing conductors, and uniquely shaped parallel cross conductors connecting the shorting and wing conductors. When mounted to a rf transmissive plastic substrate and energized the coil produces a homogeneous field within a region of interest the size of a patient head. A semicircular balanced feedbar arrangement is used to minimize undesired field contributions.
4635643 ASSAY METHOD FOR THE IN VIVO QUANTITATIVE DETERMINATION OF MINERAL CONTENT IN BONE Charles E Brown lege of Wisconsin
assigned to The Medical ColResearch Foundation Inc
An in vivo assay for quantifying the mineral content of bone comprises placing living bone into or adjacent to the coil of a nuclear magnetic resonance (NMR) spectrometer, recording a 3 1P NMR spectrum while the bone is stationary, and comparing the spectrum obtained with the NMR spectrum of a reference standard containing a known concentration of a reference compound. The assay can be used to diagnose and determine the efficacy of treatment of osteodystrophy if used in conjunction with radiographic densitometry to estimate the calcium content of the bone.
4636728 OFFSET GRADIENT FIELDS IN NUCLEAR MAGNETIC RESONANCE IMAGING SYSTEMS Russell Compton, Kramer assigned
Waldo S Hinshaw, David to Technicare Corporation
M