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:
Oct. 05, 1993
Filed:
Aug. 09, 1991
Bob S Hu, Menlo Park, CA (US);
Steven M Conolly, Menlo Park, CA (US);
Board of Trustees of the Leland Stanford Junior University, Stanford, CA (US);
Abstract
Disclosed is a method of detecting NMR signals indicative of a short T.sub.2 species in the presence of a long T.sub.2 species by utilizing magnetization transfer between species without requiring an auxiliary RF amplifier and with reduced power deposition (SAR). One or more zero degree RF pulses are applied to a body containing the short T.sub.2 species and the long T.sub.2 species with the pulses being at the resonant frequency. The RF pulses provides selective magnetization saturation of the short T.sub.2 species, and the RF pulses are spaced in time to allow magnetization transfer from the short T.sub.2 species to the long T.sub.2 species. Gradients can then be applied to the body for signal localization with signals detected from the long T.sub.2 species due to magnetization transfer from the short T.sub.2 species being indicative of the presence of the short T.sub.2 species. The signals are indicative also of the magnetization transfer between species. The zero degree RF pulses can be zero area binomial pulses or zero degree adiabatic puls