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:
Apr. 08, 2008
Filed:
Dec. 03, 2006
Weiguo Zhang, Foster City, CA (US);
Weiguo Zhang, Foster City, CA (US);
Toshiba Medical Systems Corp., Otawara-shi, JP;
Abstract
For isotropic diffusion weighting during magnetic resonance imaging, a motion-probing magnetic field gradient pattern is manufactured from a template by searching for an optimum value of a skew parameter (ε) of the template. The gradient pattern includes a first pattern before at least one RF refocusing pulse and a second pattern after the refocusing pulse in which the second pattern is symmetrical with the first pattern. For example, gradient coils produce a respective gradient component along each of three orthogonal directions, and for each component and each pattern, the gradient pattern has one cycle of opposite polarity lobes about a crossing point, and for each pattern, the crossing point of the cycle in one of the orthogonal directions is a midpoint of the cycle; and the skew parameter (ε) specifies a difference in time between the crossing points of the cycles in the other orthogonal directions.