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33279 Method for rapid acquisition of NMR data
Magneric Resonance Printed in the USA.
Imaging, Vol. 9. pp. XXIII-XXVIII, All rights reserved.
1991 Copyright
0730-725x/91 13.00 + .cul 0 1991 Pergamon Press plc
NEW 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” 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 copy. Payment with order is required. Orders outside North America add $2 for air postage. Order by patent numb& for kergamon Orbit Infoiine only.
33279
wherein the moving mechanism includes a moving assembly with respect to the plateau and the chassis, elongated in its shape with one end being movable with respect to the chassis and whose other end is movable with respect to the plateau.
METHOD FOR RAPID ACQUISITION OF NMR DATA Felix W Wehrli Company
assigned
to General
Electric
A method for rapid acquisition of NMR data utilizes excitation pulses which rotate the longitudinal magnetization through an angle smaller than 90 degrees to create a relatively large transverse magnetization component. A first 180 degrees RF pulse is then applied to create a spin-echo signal, while a second 180 degrees RF pulse is used to rapidly return to equilibrium the residual longitudinal magnetization inverted by the first pulse. The combination of the excitation and the second 180 degrees pulses permits the sequence repetition time to be shortened, thereby reducing the total data collection time. The method is applicable to, for exthree-dimensional twoand ample, of Fourier transform and embodiments multiple-angle projection reconstruction NMR imaging methods.
4944501 EXAMINATION BED FOR NMR OR TOMODENSITOMETRY APPARATUS Jacque Sireul, Rene Gauthier, Wissous, assigned to General Electric CGR SA
4945308 VOLUME SELECTED SPECTROSCOPY
NMR
David M Doddrell, William M Brooks, Westlake, Australia assigned to University of Queensland A method for volume-selected NMR spectroscopy where an rf pulse of selected bandwidth, in the presence of a field gradient superimposed upon an initial homogenous magnetic field, rotates a slice of magnetization into the transverse plane, and it then uses a high power refocussing pulse to refocus the phase roll that accompanies the rf pulse. After an appropriate time, the magnetization is pulsed back to the homogenous magnetic field axis and the gradient collapsed. A read pulse is used to tip the magnetization of interest into the transverse plane for aequisition in the absence of applied gradients.
4945321 PI/2 POWER DIVIDER
France
Ralph Oppelt, Markus Vester, Weiher, Federal Republic Of Germany assigned to Siemens Aktiengesellschaft
An examination bed, notably for RMN or tomodensitometry, which includes a chassis, an examination plateau, and a mechanism for driving movement of the plateau with respect to the chassis and with respect to the apparatus
In a pi/2 power divider, particularly a pi/2 hybrid for the radio-frequency antenna of a XXIII
Imaging, Vol. 9. pp. XXIII-XXVIII, All rights reserved.
1991 Copyright
0730-725x/91 13.00 + .cul 0 1991 Pergamon Press plc
NEW 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” 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 copy. Payment with order is required. Orders outside North America add $2 for air postage. Order by patent numb& for kergamon Orbit Infoiine only.
33279
wherein the moving mechanism includes a moving assembly with respect to the plateau and the chassis, elongated in its shape with one end being movable with respect to the chassis and whose other end is movable with respect to the plateau.
METHOD FOR RAPID ACQUISITION OF NMR DATA Felix W Wehrli Company
assigned
to General
Electric
A method for rapid acquisition of NMR data utilizes excitation pulses which rotate the longitudinal magnetization through an angle smaller than 90 degrees to create a relatively large transverse magnetization component. A first 180 degrees RF pulse is then applied to create a spin-echo signal, while a second 180 degrees RF pulse is used to rapidly return to equilibrium the residual longitudinal magnetization inverted by the first pulse. The combination of the excitation and the second 180 degrees pulses permits the sequence repetition time to be shortened, thereby reducing the total data collection time. The method is applicable to, for exthree-dimensional twoand ample, of Fourier transform and embodiments multiple-angle projection reconstruction NMR imaging methods.
4944501 EXAMINATION BED FOR NMR OR TOMODENSITOMETRY APPARATUS Jacque Sireul, Rene Gauthier, Wissous, assigned to General Electric CGR SA
4945308 VOLUME SELECTED SPECTROSCOPY
NMR
David M Doddrell, William M Brooks, Westlake, Australia assigned to University of Queensland A method for volume-selected NMR spectroscopy where an rf pulse of selected bandwidth, in the presence of a field gradient superimposed upon an initial homogenous magnetic field, rotates a slice of magnetization into the transverse plane, and it then uses a high power refocussing pulse to refocus the phase roll that accompanies the rf pulse. After an appropriate time, the magnetization is pulsed back to the homogenous magnetic field axis and the gradient collapsed. A read pulse is used to tip the magnetization of interest into the transverse plane for aequisition in the absence of applied gradients.
4945321 PI/2 POWER DIVIDER
France
Ralph Oppelt, Markus Vester, Weiher, Federal Republic Of Germany assigned to Siemens Aktiengesellschaft
An examination bed, notably for RMN or tomodensitometry, which includes a chassis, an examination plateau, and a mechanism for driving movement of the plateau with respect to the chassis and with respect to the apparatus
In a pi/2 power divider, particularly a pi/2 hybrid for the radio-frequency antenna of a XXIII