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. 27, 1993
Filed:
Oct. 23, 1991
Richard Hausmann, Erlangen, DE;
Gerhard Laub, Edison, NJ (US);
Siemens Aktiengesellschaft, , DE;
Abstract
For obtaining data in phase contrast MR angiography, which data is sensitive to flow in a sample in three-orthogonal directions, a sequence with four steps is applied to a sample. In the first step, spins are flow encoded with a positive polarity in all three directions. During the three further steps, flow encoding is inverted in one direction and kept positive in all other directions, with the direction having the inverted polarity being different in all three of the further steps. A raw data set for each of the directions is obtained by complex subtraction of the signals obtained by one of the further steps and of the signals obtained by the first step.