Koninklijke Philips Corporation N.v.

Jeffrey Edward Leach

Johannes Adrianus Overweg

Viktor Mokhnatyuk

Thomas Erik Amthor

Peter Forthmann

Philip Alexander Jonas

James Howard Kralick

Frank Battista

Dennis Ambrose Becker

Jerry Alden

Joseph C Testa

Philip Alexander Johas

A magnetic field z-gradient coil is manufactured by inserting elements () into openings () on an outside of an insulating carrier (), wrapping an electrical conductor turn () around the outside of the insulating carrier with one side of the wrapped electrical conductor alongside elements inserted into openings on the outside of the insulating carrier, removing the elements alongside the one side of the wrapped electrical conductor from the openings, and repeating to wrap conductor turns of a z-gradient coil () around the electrically insulating carrier. A transverse magnetic field gradient coil is manufactured by laying electrical conductor () onto a mold () with a keying feature () extending along the conductor engaging a mating keying feature () of the mold that defines a winding pattern (), attaching an insulating back plate () to the resulting coil section opposite from the mold, and removing the mold.

Magnetic field gradient coils with closely packed windings and methods of manufacturing same

A magnetic resonance apparatus which may include: a body portion having a cavity with a first and second ends and at least one opening situated at one of the first and second ends. The cavity may define a longitudinal axis (LA) extending between the first and second ends. At least one main magnet may generate a main magnetic field having a substantially homogenous magnetic field within the cavity. A center shim (CS) which may be formed from a ring having opposed edges and which may extend along a length of the longitudinal axis of the cavity. One or more discrete shims (DSs) may be situated between the CS and at least one of the first and second ends.

Shim system for a magnetic resonance hybrid scanner

A magnetic resonance apparatus which includes: a body portion () having a cavity () with a first and second ends and at least one opening situated at one of the first and second ends. The cavity may define a longitudinal axis (LA) extending between the first and second ends. At least one main magnet may generate a main magnetic field having a substantially homogenous magnetic field within the cavity. A center shim (CS) which may be formed from a ring having opposed edges () and which may extend along a length of the longitudinal axis of the cavity. One or more discrete shims (DSs) may be situated between the CS and at least one of the first and second ends.

A magnetic resonance imaging (MRI) system includes an MRI magnet () including a bore () and having a magnetic field and a gradient coil () disposed within the bore and having an isocenter (). A first location within the MRI magnet is determined with respect to a first predetermined reference surface of the MRI magnet, the first location representing a center () of the magnetic field. A second location within the gradient coil is determined with respect to a second predetermined reference surface of the gradient coil, the second location representing the isocenter. When the gradient coil is installed within the bore, the second predetermined reference surface abuts the first predetermined reference surface. The first predetermined reference surface is adjusted to an adjusted position, the adjusted position being determined as a function of the first location and the second location and corresponding to a position of the first predetermined reference surface at which the first location coincides with the second location when the gradient coil is installed within the bore.

System and method for locating a gradient coil

Growing community of inventors

Rexford, NY, United States of America

Jeffrey Edward Leach