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. 10, 1995
Filed:
Sep. 02, 1992
Kevin A Derby, San Bruno, CA (US);
Leon Kaufman, San Francisco, CA (US);
The Regents of the University of California, Oakland, CA (US);
Abstract
A quadrature detection (QD) head coil assembly for use in magnetic resonance imaging (MRI) having a pair of orthogonally situated zero-pitch solenoidal windings is disclosed. The turns of each winding are serially connected along the solenoid surface in a predetermined axially-extending area by using dog leg connectors. Return coil connections (i.e., an RF connection between the first and last turn of each coil) is effected substantially adjacent to the dog leg interconnections so as to minimize the area of any equivalent return loop and thus to minimize the magnitude of any inter-coil coupling via such return loops. To further minimize possible inter-coil coupling, the return loops for each of the quadrature detection coils are preferably oriented so as to primarily couple to magnetic fields that are orthogonal to the main field of both the QD coils. The use of zero- pitch turfs in each solenoidal coil winding also substantially reduces possible inter-coil coupling.