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. 16, 1996
Filed:
Aug. 05, 1994
Michael A Morich, Mentor, OH (US);
Labros Petropoulos, Cleveland Heights, OH (US);
David A Lampman, Eastlake, OH (US);
Picker International, Inc., Highland Hts., OH (US);
Abstract
An insertable coil (40) is inserted in a bore (12) of a magnetic resonance imaging apparatus. Primary field magnets (10) create a temporally constant magnetic field longitudinally through the insertable coil. A computer control (58) controls a radio frequency coil (46) and a gradient coil (42) to create magnetic resonance imaging sequences and process received magnetic resonance signals into image representations. The insertable gradient coil includes a cylindrical, dielectric former (44) of appropriate diameter to receive a patient's head. A pair of parabolic cutouts (62) are defined adjacent a patient receiving end of the dielectric former and are of an appropriate size to receive the patient's shoulders. In this manner, the patient's head can be centered in a longer head coil. Four thumbprint type x-gradient coil windings (72) are mounted symmetrically on the dielectric former with the parabolic cutouts (74) centrally on one side of the thumbprint coil windings. The windings of the thumbprint coils are contoured to follow the parabolic cutout. Four y-gradient coil windings (84) rotated 90.degree. from the x-gradient coils are mounted on the dielectric former. The y-gradient thumbprint coil windings are mounted between the parabolic cutouts and windings along their corners (82) conform to the parabola.