6-channel array coil for magnetic resonance imaging
First Claim
Patent Images
1. A magnetic resonance (MR) coil apparatus comprising:
- a first surface coil array having three circular coils overlapping one another and configured to be positioned adjacent to an imaging patient such that a first region-of-interest (ROI) of the imaging patient is within a field-of-view (FOV) of the first coil array;
a second surface coil array having three circular coils overlapping one another and configured to be positioned adjacent to the imaging patient such that a second ROI of the imaging patient is within an FOV of the second coil array;
a first former having the first coil array attached thereto;
a first pliable positioning device attached to the first former and constructed to allow positioning of the first former adjacent to the imaging patient such that the first ROI is within the FOV of the first coil array;
a second former having the second coil array attached thereto; and
a second pliable positioning device attached to the second former and constructed to allow positioning of the second former adjacent to the imaging patient such that the second ROI is within the FOV of the second coil array.
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Abstract
A method and apparatus for acquiring high resolution MR images of a carotid artery. A six-channel RF coil array has three RF coils placed in an overlapping pattern and positioned adjacent to a first region-of-interest (ROI) of an imaging patient. The six-channel RF coil also has three RF coils placed in an overlapping pattern and positioned adjacent to a second ROI of an imaging patient.
45 Citations
30 Claims
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1. A magnetic resonance (MR) coil apparatus comprising:
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a first surface coil array having three circular coils overlapping one another and configured to be positioned adjacent to an imaging patient such that a first region-of-interest (ROI) of the imaging patient is within a field-of-view (FOV) of the first coil array; a second surface coil array having three circular coils overlapping one another and configured to be positioned adjacent to the imaging patient such that a second ROI of the imaging patient is within an FOV of the second coil array; a first former having the first coil array attached thereto; a first pliable positioning device attached to the first former and constructed to allow positioning of the first former adjacent to the imaging patient such that the first ROI is within the FOV of the first coil array; a second former having the second coil array attached thereto; and a second pliable positioning device attached to the second former and constructed to allow positioning of the second former adjacent to the imaging patient such that the second ROI is within the FOV of the second coil array. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An MRI apparatus comprising:
a magnetic resonance imaging (MRI) system having a plurality of gradient coils positioned about a bore of a magnet to impress a polarizing magnetic field and an RF transceiver system and an RF switch controlled by a pulse module to transmit RF signals to an RF coil assembly to acquire MR images, the RF coil assembly comprising; a first former having three RF coils attached thereto and positionable adjacent to a first head portion and a first neck portion of a patient; a second former having three RF coils attached thereto and positionable adjacent to a second head portion and a second neck portion of the patient; and wherein the three RF coils attached to the first former are positioned in an overlapped arrangement such that isolation between the coils is less than −
20 decibels and wherein the three RF coils attached to the second former are positioned in an overlapped arrangement such that isolation between the coils is less than −
20 decibels.- View Dependent Claims (16, 17, 18, 19, 20)
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21. A method of manufacturing an RF coil assembly comprising the steps of:
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attaching a first set of three RF coils to a first former; attaching a second set of three RF coils to a second former; attaching a first adjustable support to the first former; attaching a second adjustable support to the second former; connecting a first plurality of wires routed through the first adjustable support to each RF coil of the first set of RF coils; and connecting a second plurality of wires routed through the second adjustable support to each RF coil of the second set of RF coils. - View Dependent Claims (22, 23, 24, 25)
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26. A magnetic resonance (MR) coil apparatus comprising:
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a first coil array having three coils placed in an overlapping pattern and configured to be positioned adjacent to an imaging patient such that a first region-of-interest (ROI) of the imaging patient is within a field-of-view (FOV) of the first coil array; a second coil array having three coils placed in an overlapping pattern and configured to be positioned adjacent to the imaging patient such that a second ROI of the imaging patient is within an FOV of the second coil array; a first former having the first coil array attached thereto and constructed to have a surface portion contoured to substantially match at least a first portion of a head and at least a first portion of a neck of the imaging patient; a second former having the second coil array attached thereto and constructed to have a surface portion contoured to substantially match at least a second portion of the head and at least a second portion of the neck of the imaging patient; a first pliable positioning device attached to the first former and constructed to allow positioning of the first former adjacent to the at least a first portion of the head and the at least a first portion of the neck of the imaging patient; and a second pliable positioning device attached to the second former and constructed to allow positioning of the second former adjacent to the at least a second portion of the head and the at least a second portion of the neck of the imaging patient. - View Dependent Claims (27, 28)
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29. A magnetic resonance (MR) coil apparatus comprising:
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a first surface coil array having three circular coils overlapping one another and configured to be positioned adjacent to an imaging patient such that a first region-of-interest (ROI) of the imaging patient is within a field-of-view (FOV) of the first coil array; a second surface coil array having three circular coils overlapping one another and configured to be positioned adjacent to the imaging patient such that a second ROI of the imaging patient is within an FOV of the second coil array; a first former having the first coil array attached thereto and constructed to have a surface portion contoured to substantially match at least a first portion of a head and at least a first portion of a neck of the imaging patient; a second former having the second coil array attached thereto and constructed to have a surface portion contoured to substantially match at least a second portion of the head and at least a second portion of the neck of the imaging patient; a first pliable positioning device attached to the first former and constructed to allow positioning of the first former adjacent to the at least a first portion of the head and the at least a first portion of the neck of the imaging patient; and a second pliable positioning device attached to the second former and constructed to allow positioning of the second former adjacent to the at least a second portion of the head and the at least a second portion of the neck of the imaging patient.
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30. An MRI apparatus comprising:
a magnetic resonance imaging (MRI) system having a plurality of gradient coils positioned about a bore of a magnet to impress a polarizing magnetic field and an RF transceiver system and an RF switch controlled by a pulse module to transmit RF signals to an RF coil assembly to acquire MR images, the RF coil assembly comprising; a first former having three RF coils attached thereto and positionable adjacent to a first head portion and a first neck portion of a patient; a second former having three RF coils attached thereto and positionable adjacent to a second head portion and a second neck portion of the patient; and wherein each RF coil has a cable trap balun connected thereto, and wherein the cable trap balun is further connected to a half-wavelength cable.
Specification