RF coil device and magnetic resonance imaging apparatus

Patent metadata

Field	Value
Publication number	US-9545218-B2
Application number	US-201213403315-A
Country	US
Kind code	B2
Filing date	Feb 23, 2012
Priority date	Nov 17, 2010
Publication date	Jan 17, 2017
Grant date	Jan 17, 2017

Abstract

In one embodiment, an RF coil device includes a base board, a belt member, a first coil element, a second coil element inside the base board, and a connecting unit. Both ends of the belt member are respectively connected to mutually separated places on the base board, so that the center part of the belt member is located on the anterior surface of the base board. The belt member is curved to form airspace between the center part thereof and the anterior surface for letting an arm pass through in interdigitation state. The first coil element includes first and second partial coils inside the belt member, and becomes a loop coil element by their connection. The connecting unit detachably connects the base board to the belt member, and mutually connects the first and second partial coils in the interdigitation state.

First claim

What is claimed is:

1. An RF coil device which is configured to be set on a shoulder of an object and to receive an echo signal in magnetic resonance imaging, said RF coil device comprising:
a base board that has a thickness between an anterior surface and an underside surface opposite to the anterior surface, and is to come into contact with the object at the anterior surface;
a belt member that has a band-like shape with two ends, is connected at each end to the base board at different positions spaced apart from each other with a central part of the belt member being located on a side of the anterior surface of the base board, and is bent to form a space for disposing an arm of the object between the central part and the anterior surface when the base board and the belt member are connected to each other;
a first coil element that includes a first partial coil disposed in the belt member and a second partial coil disposed in the base board and forms a loop coil when the first partial coil and the second partial coil are electrically connected to each other;
a second coil element disposed in the base board; and
a plurality of connecting units that are disposed on the anterior surface of the base board at one end and another end of the second partial coil, detachably connects the base board and the belt member to each other, and electrically connects the first partial coil and the second partial coil to each other when the base board and the belt member are connected to each other.

2. The RF coil device according to claim 1 ,
wherein the base board is configured in a form of a flat plate.

3. The RF coil device according to claim 2 ,
wherein the first and second coil elements are arranged in such a manner that each extending region of each wire of the first and second coil elements is planar and a plane overlapping an entire loop of the first coil element is perpendicular to a plane overlapping an entire loop of the second coil element, when the belt member and the base board are connected to each other.

4. An RF coil device which is configured to be set on a shoulder of an object and to receive an echo signal in magnetic resonance imaging, said RF coil device comprising:
a base board that has a thickness between an anterior surface and an underside surface opposite to the anterior surface, and is to come into contact with the object at the anterior surface;
a belt member that has a band-like shape with two ends, is connected at each end to the base board at different positions spaced apart from each other with a central part of the belt member being located on a side of the anterior surface of the base board, and is bent to form a space for disposing an arm of the object between the central part and the anterior surface when the base board and the belt member are connected to each other;
a first coil element that has a part disposed in the belt member to extend from one end to another end and a remaining part disposed in the base board so as to form a loop coil;
a second coil element disposed in the base board;
an overlay member that is detachably connected to the base board to partially cover the anterior surface of the base board; and
a third coil element at least a part of which is disposed in the overlay member.

5. The RF coil device according to claim 4 ,
wherein the overlay member is made of a flexible material.

6. The RF coil device according to claim 4 ,
wherein the base board is configured in a form of a flat plate.

7. The RF coil device according to claim 4 ,
wherein the first and second coil elements are arranged in such a manner that each extending region of each wire of the first and second coil elements is planar and a plane overlapping an entire loop of the first coil element is perpendicular to a plane overlapping an entire loop of the second coil element, when the belt member and the base board are connected to each other.

8. An RF coil device which is configured to be set on a shoulder of an object and to receive an echo signal in magnetic resonance imaging, said RF coil device comprising:
a base board that has a thickness between an anterior surface and an underside surface opposite to the anterior surface and is to come into contact with the object at the anterior surface;
a belt member that has a band-like shape, is pivotally fixed to the base board at one end, is detachably connected to the base board at another end with a central part of the belt member being located on a side of the anterior surface of the base board when the belt member is connected to the base board, and is bent to form a space for disposing an arm of the object between the central part and the anterior surface when the base board and the belt member are connected to each other;
a first coil element that has a part disposed in the belt member to extend from one end to another end and a remaining part disposed in the base board, and forms a loop coil when the base board and the belt member are connected to each other;
a connecting unit that is disposed on the base board at one end of the first coil element, detachably connects another end of the belt member to the base board, and electrically connects the part and the remaining part of the first coil element to each other when the belt member and the base board are connected to each other; and
a second coil element disposed in the base board.

9. The RF coil device according to claim 8 ,
wherein the base board is configured in a form of a flat plate.

10. The RF coil device according to claim 9 ,
wherein the first and second coil elements are arranged in such a manner that each extending region of each wire of the first and second coil elements is planar and a plane overlapping an entire loop of the first coil element is perpendicular to a plane overlapping an entire loop of the second coil element, when the belt member and the base board are connected to each other.

11. An RF coil device which is configured to be set on a shoulder of an object and to receive an echo signal in magnetic resonance imaging, said RF coil device comprising:
a base member that has a first coil element disposed therein and is to come into contact with the shoulder of the object;
a belt member that is made of a flexible material in a form of a band, is partially fixed to the base member, and wraps around an arm of the object when one end and an opposite end thereof are connected to each other;
a second coil element that is disposed in the belt member to extend from said one end to said opposite end, and forms a loop coil when both ends of the belt member are connected to each other;
a connecting unit that is disposed at said one end or said opposite end of the belt member, detachably connects both ends of the belt member to each other, and electrically connects both ends of the second coil element to each other when both ends of the belt member are connected to each other;
a flap member that is made of a flexible material and is partially fixed to the belt member; and
a loop-shaped third coil element at least a part of which is disposed in the flap member.

12. An RF coil device which is configured to be set on shoulders of an object and to receive an echo signal in magnetic resonance imaging, said RF coil device comprising:
a base board that has a thickness between an anterior surface and an underside surface opposite to the anterior surface and is to come into contact with a back of the object including the shoulders at the anterior surface;
a first belt member and a second belt member each of which has a band-like shape with two ends, is connected at both ends of the respective first and second belt members to the base boar

Assignees

• Ota Miyuki
• Tomiha Sadanori
• Mitsui Shinji
• Takagi Mitsuo
• Motohashi Hiroki
• Okamoto Kazuya
• Makita Junichi
• Toshiba Medical Sys Corp

Inventors

• Ota Miyuki
• Tomiha Sadanori
• Mitsui Shinji
• Takagi Mitsuo
• Motohashi Hiroki
• Okamoto Kazuya
• Makita Junichi

Classifications

• A61B5/055 Primary

  involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging · CPC title

• A61B5/702 Primary

  Posture restraints · CPC title

• G01R33/34084

  implantable coils or coils being geometrically adaptable to the sample, e.g. flexible coils or coils comprising mutually movable parts · CPC title

• A61B5/0555 Primary

  Human Necessities · mapped topic