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:
Mar. 04, 2003
Filed:
Sep. 28, 2000
Hiroshi Sato, Tokyo, JP;
GE Yokogawa Medical Systems, Limited, Tokyo, JP;
Abstract
An MRI apparatus, which is intended to produce a diffusion-weighted image in a short scan time without being affected by as light motion of the subject, applies an excitation RF pulse R and a slice-select pulse S , next applies an MPG pulse MPG , next applies an inverted RF pulse R and a slice-select pulse S , and next applies an MPG pulse MPG . Subsequently, the apparatus applies a read pulse RDx to one read axis (x-direction) and a read pulse RDy to another read axis (y-direction) so that the vector-composed read gradient has a direction of angle &thgr;i of a virtual radial line on the slice plane, and collects data for imaging from echoes e. The apparatus implements once or repeats the series of pulse application and data collection while inverting the polarity of the read pulses RDx and RDy and varying the areas of the read pulses RDx and RDy thereby to vary the angle &thgr;i so that the echoes e settle, thereby collecting data necessary for image reconstruction.