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:
Nov. 09, 1993
Filed:
Mar. 31, 1992
David G Cory, Boston, MA (US);
Bruker Instruments, Inc., Billerica, MA (US);
Abstract
In an NMR solid-state imaging experiment, a pulsed gradient is interleaved between subcycles of a line-narrowing RF pulse sequence in such a manner that the RF and gradient fields do not overlap in time, the subcycles of RF modulation which occur between gradient pulses are either cyclic or anti-cyclic and symmetric. The line-narrowing pulse sequence can be broken into subcycles, each of which is dipolar decoupling to at least a zero-order approximation. The gradient pulses are intercalated between a selected set of the subcycles which are symmetric. In this manner the prior art zero-order decoupling of the line narrowing interaction and the gradient interaction is extended to include the zero order and all odd order terms in the Magnus expansion of the average dipolar Hamiltonian. If the selected subcycle is dipolar decoupling to second order, then the gradient will also be decoupled to second order.