Multi-channel coil for magnetic resonance imaging
OwnerJoshua J. Holwell, Scott M. Schillak +3inventors
InventorsJoshua J. Holwell, Scott M. Schillak, Kenneth M. Bradshaw, Brandon J. Tramm, Labros L. Petropoulos
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Abstract
This document discusses, among other things, a system and method for a coil having a plurality of resonant elements capable of radiofrequency transmission, reception, or both transmission and reception. One example includes a multi-channel receive-only coil comprised of overlapping planar loops. Adjacent resonant elements are decoupled from one another by both capacitive elements and by the geometric configuration of the elements. Cables are coupled to each resonant element and are gathered at a junction in a particular manner.
Claims44
An extremity coil for Magnetic Resonance Imaging (MRI), the extremity coil comprising:
- a transmit coil;
- and
- a receive coil, the receive coil including a plurality of substantially planar loop elements disposed about a substantially tubular volume, at least one of the loop elements overlapping both a circumferentially adjacent loop element and an axially adjacent loop element.
A Transmit Only Receive Only extremity coil for a Magnetic Resonance Imaging (MRI) system, comprising of:
- a transmit coil;
- and a receive coil array having a plurality of coils where the superior and inferior coils are displaced relative to each other on the first said direction, the anterior and inferior coils are displaced relative to each other on the second said direction and the left section and right section of coils are displaced relative to each other on the third said direction.
A magnetic resonance imaging (MRI) system comprising:
- an annular vacuum chamber which defines a cylindrical inner bore therein;
- an annular helium reservoir disposed within the vacuum chamber surrounding and displaced from the central bore thereof;
- a superconducting primary magnetic field coil disposed within the helium chamber for generating a substantially uniform magnetic field longitudinally through the central bore;
- a self-shielded gradient coil assembly disposed in the central bore for generating gradient magnetic fields across a central region thereof and for shielding the vacuum chamber, the helium reservoir, and other components within the vacuum chamber from the generated gradient field magnetic fields such that eddy currents are not induced in the vacuum chamber or the contained associated structure;
- A Transmit Only Receive Only extremity coil for a Magnetic Resonance Imaging (MRI) system, comprising of:
- a transmit coil;
- and a receive coil array having a plurality of coils where the superior and inferior coils are displaced relative to each other on the first said direction, the anterior and inferior coils are displaced relative to each other on the second said direction and the left section and right section of coils are displaced relative to each other on the third said direction
- a scan control which selectively causes electrical pulses to be applied to the x, y, and z-primary and shield gradient coils;
- a radio frequency transmitter which applies radio frequency pulses to the radio frequency Transmit Only coil for exciting and manipulating magnetic resonance of selected dipoles within the examination region;
- a receiver which receives and demodulates magnetic resonance signals emanating from the plurality of the Receive Only coil arrays located on the examination region;
- and
- a reconstruction processor which reconstructs the demodulated magnetic resonance signals into an image representation.
Dependencies are inferred from the claim text.