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US 11,493,577 B2Granted
Systems and methods for magnetic resonance imaging
AssigneeShanghai United Imaging Healthcare Co., Ltd.
InventorsZhen Wang, Shao Che, Hai Lu, Xianwen Fan
Life of this patent
Estimating the term…
Abstract
The present disclosure provides a magnetic resonance imaging (MRI) radio frequency (RF) coil assembly. The MRI RF coil assembly may include one or more coils and one or more control circuits. Each of the one or more coils may include a first end and a second end. Each of the one or more control circuits may electrically connect the first end and the second end of one of the one or more coil. Each of the one or more control circuits may be configured to adjust an operation of the coil that is electrically connected with the control circuit based on an input control signal. The one or more control circuits may be located at different regions.
Claims14
A magnetic resonance imaging (MRI) radio frequency (RF) coil assembly, comprising:
- one or more coils each of which includes a first end and a second end;
- and
- one or more control circuits each of which electrically connects the first end and the second end of one of the one or more coils, wherein each of the one or more control circuits is configured to adjust, based on an input control signal, an operation of the coil that is electrically connected with the control circuit, and the one or more control circuits are located at different regions, wherein one of the one or more control circuits includes:
- a matching circuit a first end of which electrically connects the first end of the coil, the matching circuit being configured to adjust an impedance in a loop including the matching circuit;
- a detuning circuit a first end of which electrically connects a second end of the matching circuit;
- a tuning capacitor a first end of which electrically connects a second end of the detuning circuit, a second end of the tuning capacitor electrically connecting the second end of the coil;
- a preamplifier a first input end of which electrically connects the first end of the matching circuit, a second input end of the preamplifier electrically connecting a second end of the matching circuit and having a grounded connection;
- a third end of the detuning circuit electrically connects the second input end of the preamplifier;
- a fourth end of the detuning circuit is configured to input the input control signal;
- and
- an output end of the preamplifier is configured to output a radio frequency signal when the coil is in a tuned state.
8 more elements
A device for magnetic resonance imaging (MRI), comprising:
- a coil assembly configured to receive an MR signal generated from a subject, including:
- one or more coils each of which includes a first end and a second end, at least two adjacent coils defining an overlapping region;
- and
- one or more control circuits each of which electrically connects the first end and the second end of each of at least a portion of the one or more coils, wherein
- each of the one or more control circuits is configured to adjust, based on an input control signal, an operation of at least a portion of the one or more coils that electrically connects the control circuit, and
- each of the one or more control circuits includes a plurality of electronic components, at least one electronic component electrically connected with one of the at least two adjacent coils is positioned outside the overlapping region, wherein one of the one or more control circuits includes:
- a matching circuit a first end of which electrically connects the first end of the coil, the matching circuit being configured to adjust an impedance in a loop including the matching circuit;
- a detuning circuit a first end of which electrically connects a second end of the matching circuit;
- a tuning capacitor a first end of which electrically connects a second end of the detuning circuit, a second end of the tuning capacitor electrically connecting the second end of the coil;
- a preamplifier a first input end of which electrically connects the first end of the matching circuit, a second input end of the preamplifier electrically connecting a second end of the matching circuit and having a grounded connection;
- a third end of the detuning circuit electrically connects the second input end of the preamplifier;
- a fourth end of the detuning circuit is configured to input the input control signal;
- and
- an output end of the preamplifier is configured to output a radio frequency signal when the coil is in a tuned state.
11 more elements
A device for magnetic resonance imaging (MRI), comprising:
- a coil assembly configured to receive an MR signal generated from a subject, including:
- one or more coils each of which includes a first end and a second end;
- and
- one or more control circuits each of which electrically connects the first end and the second end of each of at least a portion of the one or more coils, wherein
- each of the one or more control circuits is configured to adjust, based on an input control signal, an operation of at least a portion of the one or more coils that electrically connects the control circuit, and
- at least one of the one or more coils includes an electric conductor, the electric conductor including a metal fabric layer that includes a plurality of metal wires crossed and connected with each other, wherein one of the one or more control circuits includes:
- a matching circuit a first end of which electrically connects the first end of the coil, the matching circuit being configured to adjust an impedance in a loop including the matching circuit;
- a detuning circuit a first end of which electrically connects a second end of the matching circuit;
- a tuning capacitor a first end of which electrically connects a second end of the detuning circuit, a second end of the tuning capacitor electrically connecting the second end of the coil;
- a preamplifier a first input end of which electrically connects the first end of the matching circuit, a second input end of the preamplifier electrically connecting a second end of the matching circuit and having a grounded connection;
- a third end of the detuning circuit electrically connects the second input end of the preamplifier;
- a fourth end of the detuning circuit is configured to input the input control signal;
- and
- an output end of the preamplifier is configured to output a radio frequency signal when the coil is in a tuned state.
11 more elements
Dependencies are inferred from the claim text.