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. 17, 1987
Filed:
Feb. 12, 1986
Jens Frahm, Goettingen, DE;
Axel Haase, Goettingen, DE;
Dieter Matthaei, Goettingen, DE;
Wolfgang Haenicke, Goettingen, DE;
Klaus-Dietmar Merboldt, Goettingen, DE;
Max-Planck-Gesellschaft zur Foerderung der Wissenschaften e.V., Goettingen, DE;
Abstract
A fast low angle shot ('FLASH') NMR method is described, which uses radio frequency excitation pulses having a flip angle substantially less than 90 degrees, and subsequent reading gradient reversal for producing a gradient echo signal. The small flip angle pulses create an equilibrium state between longitudinal and transverse magnetization, which allows to apply the radio frequency pulses repeatedly with high repetition rate to produce gradient echo signals of essentially equal strength, without any intervening delay for magnetization restoration or recovery.