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:
Jan. 01, 2007
Filed:
Aug. 07, 2003
Karen L. Sauer, Alexandria, VA (US);
Christopher A. Klug, Alexandria, VA (US);
Allen Garroway, Davidsonville, MD (US);
Joel B. Miller, Cheverly, MD (US);
Karen L. Sauer, Alexandria, VA (US);
Christopher A. Klug, Alexandria, VA (US);
Allen Garroway, Davidsonville, MD (US);
Joel B. Miller, Cheverly, MD (US);
The United States of America, as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
A magnetic resonance detection apparatus is provided that is not susceptible to acoustic ringing, and a method is provided for eliminating or canceling acoustic ringing from a detected magnetic resonance signal. Specifically, a composite pulse is utilized that allows for both efficient reduction of acoustic ringing signals and the detection of true NQR signals. The composite pulse can be used in any of the common NQR pulse sequences currently utilized simply via substitution of the original single pulses with the composite pulse. Furthermore, although a preferred application involves the spin-1 nucleusN and NQR, the composite pulse will be useful for the NQR of other nuclei such asCI andK and in NMR applications and involving half-integer quadrupolar nuclei and spin- 1/2 nuclei. In addition, coil ringdown and piezoelectric ringing are also substantially reduced.