Apparatus and method for decoupling MR coils
First Claim
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1. An apparatus comprising:
- a first RF coil integrated into a first printed circuit board (PCB);
a second RF coil integrated into the first PCB; and
an adjustable tuning member positioned adjacently to the first PCB and inductively coupled to the first and second RF coils, the adjustable tuning member configured to minimize a mutual inductance formed between the first and second RF coils via modification of a coupling constant between the first and second RF coils, wherein the adjustable tuning member comprises an electrically conductive material integrated into a second PCB, and wherein the second PCB is adjustably affixed to the first PCB such that the second PCB can be rotated or translated with respect to the first PCB to position the adjustable tuning member adjacently to a region between the first and second RF coils so as to minimize the mutual inductance between the first and second RF coils.
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Abstract
An apparatus includes a first RF coil integrated into a first printed circuit board (PCB) and a second RF coil integrated into the first PCB. The apparatus also includes a tuning member positioned adjacently to the first PCB and inductively coupled to the first and second RF coils, the tuning member configured to minimize a mutual inductance formed between the first and second RF coils via modification of a coupling constant between the first and second RF coils.
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Citations
16 Claims
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1. An apparatus comprising:
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a first RF coil integrated into a first printed circuit board (PCB); a second RF coil integrated into the first PCB; and an adjustable tuning member positioned adjacently to the first PCB and inductively coupled to the first and second RF coils, the adjustable tuning member configured to minimize a mutual inductance formed between the first and second RF coils via modification of a coupling constant between the first and second RF coils, wherein the adjustable tuning member comprises an electrically conductive material integrated into a second PCB, and wherein the second PCB is adjustably affixed to the first PCB such that the second PCB can be rotated or translated with respect to the first PCB to position the adjustable tuning member adjacently to a region between the first and second RF coils so as to minimize the mutual inductance between the first and second RF coils. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method comprising:
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forming a first RF coil in a first primed circuit board (PCB); forming a second RF coil in the first PCB; forming an adjustable inductive member, wherein forming the adjustable inductive member comprises forming the adjustable inductive member on a second PCB that is adjustably affixed to the first PCB; rotating or translating the second PCB with respect to the first PCB to position the adjustable inductive member adjacently to a region between the first and second RF coils such that the adjustable inductive member is inductively coupled to the first and second RF coils and such that the adjustable inductive member minimizes a mutual inductance between the first and second RF coils; and affixing the second PCB to the first PCB at a position for which mutual inductance between the first and second RF coils is minimized. - View Dependent Claims (12)
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13. An apparatus comprising:
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a first plurality of RF coils formed onto a first printed circuit board (PCB), each coil of the first plurality of RF coils overlapping another coil of the first plurality of RF coils in a first overlapping direction; a second plurality of RF coils formed onto the first PCB, each coil of the second plurality of RF coils overlapping another coil of the second plurality of RF coils in the first overlapping direction, wherein the second plurality of RF coils is adjacent to the first plurality of RF coils, and wherein the second plurality of RF coils is underlapped from the first plurality of RF coils in a second direction orthogonal to the first overlapping direction; and a first plurality of adjustable tuning members, each adjustable tuning member formed onto a distinct PCB and configured to reduce a coupling of a first respective pair of coils via an inductive coupling with each coil of the first respective pair of coils, wherein each first respective pair of coils comprises; a coil of the first plurality of RF coils; and a neighboring coil of the second plurality of RF coils; wherein each distinct PCB is adjustably affixed to the first PCB such that the each distinct PCB can be rotated or translated with respect to the first PCB to position the corresponding adjustable tuning member adjacently to a region between the corresponding first respective pair of coils so as to reduce the coupling of the first respective pair of coils. - View Dependent Claims (14, 15, 16)
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Specification