The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 20, 1991
Filed:
Nov. 15, 1989
Peter R Luyten, Eindhoven, NL;
U.S. Philips Corp., New York, NY (US);
Abstract
A magnetic resonance method for in vivo measurement of water-suppressed localized proton spectra, and device for performing the method, utilizes a frequency selective adiabatic fast passage pulse to achieve water suppression. Subsequent to a waiting period after the adiabatic pulse, during which selectively excited water magnetization has longitudinally relaxed until the longitudinal water magnetization has reached an amplitude of zero, an echo resonance signal in which water has been suppressed is generated by means of a volume-selective Hahn spin echo sequence. A spectrum is determined from the echo resonance signal by way of Fourier transformation. The method is particularly suitable for in vivo use in conjunction with surface coils where the rf electromagnetic field is liable to exhibit a substantial inhomogeneity. Comparatively small volumes can be measured by combination with a Hahn spin echo sequence, the overall examination time during in vivo measurement remaining within acceptable limits, for example during spectroscopic imaging.