RF COIL DEVICE AND MAGNETIC RESONANCE IMAGING APPARATUS
First Claim
1. An RF coil device which is set on a shoulder of an object and receives an echo signal in magnetic resonance imaging, 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 connected at its one end and opposite 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 Assignments
0 Petitions
Accused Products
Abstract
In one embodiment, an RF coil device (90A) includes a base board (96), a belt member (94a), a first coil element (108a, 108b), a second coil element (104, 106) inside the base board, and a connecting unit (100, 102). 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.
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Citations
20 Claims
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1. An RF coil device which is set on a shoulder of an object and receives an echo signal in magnetic resonance imaging, comprising:
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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 connected at its one end and opposite 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. - View Dependent Claims (2, 3, 20)
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4. An RF coil device which is set on a shoulder of an object and receives an echo signal in magnetic resonance imaging, comprising:
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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 connected at its one end and opposite 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. - View Dependent Claims (5, 6, 7)
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8. An RF coil device which is set on a shoulder of an object and receives an echo signal in magnetic resonance imaging, comprising:
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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. - View Dependent Claims (9, 10)
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11. An RF coil device which is set on a shoulder of an object and receives an echo signal in magnetic resonance imaging, comprising:
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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.
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12. An RF coil device which is set on shoulders of an object and receives an echo signal in magnetic resonance imaging, comprising:
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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, is connected at both ends to the base board at different positions with a central part thereof being located on a side of the anterior surface of the base board, and is bent to form “
a space for disposing a different arm of the object between the central part and the anterior surface”
when the first and second belt members are connected to the base board;a first coil element that has a part disposed in the first 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 that has a part disposed in the second 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; and a third coil element disposed in the base board. - View Dependent Claims (13)
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14. An RF coil device which is set on a shoulder of an object and receives an echo signal in magnetic resonance imaging, comprising:
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a first base member configured in a form of a flat plate; a second base member configured to be in a form of a flat plate, and disposed so that at least a part of the second base member overlaps on the first base member; a belt member configured to be circularly shaped so as to let an arm of the object pass through the belt member, outer periphery of the belt member being partially fixed to the first base member; a rotational axis structure configured to include a rotational axis passing through the first and second base members, and rotatably fix the first and second base members to the belt member; a first coil element disposed in the first base member; a second coil element disposed in the second base member; and a third coil element disposed in the belt member. - View Dependent Claims (15)
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16. An RF coil device which is set on a shoulder of an object and receives an echo signal in magnetic resonance imaging, comprising:
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a band member that is made of a flexible material in a form of a band so as to wrap around an arm of the object, has a central part having a smaller width than ambilateral parts of the central part, and is tapered at one end and another end; a first coil element that is disposed in the band member to extend from said one end to said another end, and forms a loop coil when said one end and said another end are connected to each other; a connecting unit that is disposed at said one end or said another end of the band member, detachably connects said one end and said another end to each other, and electrically connects both ends of the first coil element each other when both ends of the band member are connected to each other; a second coil element disposed in the band member at a position closer to said one end than the central part; and a third coil element disposed in the band member at a position closer to said another end than the central part.
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17. An RF coil device which is set on a shoulder of an object and receives an echo signal in magnetic resonance imaging, comprising:
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a cover member that is made of a flexible material in a form of a band so as to cover “
an anterior surface and a posterior surface of the shoulder of the object”
with “
a part at one end and a part at another end”
by being bent at a middle part in a length direction thereof, width of a central part of the cover member being narrower than remaining parts thereof;a belt member that is made of a flexible material, connected at one end with one end of the cover member, and detachably connected at another end with another end of the cover member; 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 cover member to extend from one end to another end”
, and forms a loop coil when said another end of the cover member and another end of the belt member are connected to each other; anda connecting unit that is disposed at said another end of the cover member, detachably connects said another end of the cover member with said another end of the belt member each other, and electrically connects both ends of the first coil element each other when the cover member and the belt member are connected with each other; a second coil element disposed in the cover member at a position closer to said one end of the cover member than the central part; and a third coil element disposed in the cover member at a position closer to said another end of the cover member than the central part.
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18. An RF coil device which is set on a shoulder of an object and receives an echo signal in magnetic resonance imaging, comprising:
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a cover member that has an anterior surface and an underside surface opposite to each other, and is bent with the underside surface being positioned inside to have a U-shaped or angled-bracket-shaped transverse section in a plane perpendicular to the anterior surface and the underside surface so as to cover the shoulder of the object; a supporting member that has “
an aperture for letting an arm of the object pass” and
is partially fixed to the underside surface of the cover member so that an aperture plane thereof is oriented in parallel with said transverse section;a first flap member and a second flap member that are made of a flexible material in a form of a flap, and are partially fixed to the cover member at positions to face each other with the supporting member interposed therebetween so as to cover a part of an anterior surface or a posterior surface of the shoulder of the object; a first coil element disposed in the first flap member; a second coil element disposed in the second flap member; and a third coil element disposed in the supporting member so as to make a circuit on an outer side of the aperture. - View Dependent Claims (19)
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Specification