Adapter, coil, and magnetic resonance imaging system

Patent metadata

Field	Value
Publication number	US-9746534-B2
Application number	US-201314135229-A
Country	US
Kind code	B2
Filing date	Dec 19, 2013
Priority date	Dec 20, 2012
Publication date	Aug 29, 2017
Grant date	Aug 29, 2017

Abstract

An adapter includes a control circuit, a control signal interface, a first input signal interface, a second input signal interface, and a first output signal interface. The control signal interface receives a tuning/detuning signal, and the control circuit switches, according to the tuning/detuning signal, the first input signal interface and the second input signal interface to be in conduction with the first output signal interface.

First claim

The invention claimed is:

1. An adapter comprising:
a control circuit;
a control signal interface;
a first input signal interface configured to interface with a first magnetic resonance coil;
a second input signal interface configured to interface with a second magnetic resonance coil; and
a first output signal interface configured to interface with a magnetic resonance imaging system,
wherein the control signal interface is configured to receive a tuning/detuning signal of the magnetic resonance imaging system, and
wherein the control circuit is configured to switch, according to the tuning/detuning signal, the first input signal interface and the second input signal interface to be in conduction with the first output signal interface.

2. The adapter of claim 1 , further comprising a second output signal interface,
wherein the control circuit is configured to switch, according to the tuning/detuning signal, the first input signal interface and the second input signal interface to be in conduction with the first output signal interface and the second output signal interface.

3. The adapter of claim 2 , wherein the second output signal interface is grounded.

4. The adapter of claim 2 , wherein the control circuit comprises a first diode, a second diode, a third diode, and a fourth diode,
wherein cathodes of the first diode and the second diode are connected to the first input signal interface, anodes of the third diode and the fourth diode are connected to the second input signal interface, an anode of the first diode and a cathode of the fourth diode are connected to the second output signal interface, and an anode of the second diode and a cathode of the third diode are connected to the control signal interface and the first output signal interface.

5. The adapter of claim 4 , wherein the first diode, the second diode, the third diode, and the fourth diode are respectively connected in parallel with a protection circuit.

6. The adapter of claim 5 , wherein the protection circuit comprises a resistor and an inductor connected in series.

7. The adapter of claim 2 , wherein the control circuit comprises a first diode, a second diode, a third diode, a fourth diode, a fifth diode, and a sixth diode,
wherein anodes of the first diode and the second diode are connected to the control signal interface, a cathode of the first diode, a cathode of the third diode and the first input signal interface are connected to an anode of the sixth diode, a cathode of the second diode, a cathode of the fourth diode and the second input signal interface are connected to an anode of the fifth diode, an anode of the third diode and a cathode of the fifth diode are connected to the first output signal interface, and an anode of the fourth diode and a cathode of the sixth diode are connected to the second output signal interface.

8. A magnetic resonance imaging system comprising:
an adapter comprising:
a control circuit having a first diode, a second diode, a third diode, a fourth diode, a fifth diode, and a sixth diode;
a control signal interface;
a first input signal interface;
a second input signal interface;
a first output signal interface; and
a second output signal interface,

wherein the control signal interface is configured to receive a tuning/detuning signal,
wherein the control circuit is configured to switch, according to the tuning/detuning signal, the first input signal interface and the second input signal interface to be in conduction with the first output signal interface and the second output signal interface,
wherein anodes of the first diode and the second diode are connected to the control signal interface,
wherein a cathode of the first diode, a cathode of the third diode, and the first input signal interface are connected to an anode of the sixth diode,
wherein a cathode of the second diode, a cathode of the fourth diode, and the second input signal interface are connected to an anode of the fifth diode,
wherein an anode of the third diode and a cathode of the fifth diode are connected to the first output signal interface, and
wherein an anode of the fourth diode and a cathode of the sixth diode are connected to the second output signal interface.

9. The magnetic resonance imaging system of claim 8 , wherein the second output signal interface is grounded.

10. A coil for a magnetic resonance imaging system, the coil comprising:
an adapter comprising:
a control circuit;
a control signal interface;
a first input signal interface configured to interface with a first magnetic resonance coil;
a second input signal interface configured to interface with a second magnetic resonance coil; and
a first output signal interface configured to interface with a magnetic resonance imaging system,

wherein the control signal interface is configured to receive a tuning/detuning signal of the magnetic resonance imaging system, and
wherein the control circuit is configured to switch, according to the tuning/detuning signal, the first input signal interface and the second input signal interface to be in conduction with the first output signal interface.

11. The coil of claim 10 , wherein the adapter further comprises:
a second output signal interface,
wherein the control circuit is configured to switch, according to the tuning/detuning signal, the first input signal interface and the second input signal interface to be in conduction with the first output signal interface and the second output signal interface.

12. The coil of claim 11 , wherein the control circuit comprises a first diode, a second diode, a third diode, and a fourth diode,
wherein cathodes of the first diode and the second diode are connected to the first input signal interface, anodes of the third diode and the fourth diode are connected to the second input signal interface, an anode of the first diode and a cathode of the fourth diode are connected to the second output signal interface, and an anode of the second diode and a cathode of the third diode are connected to the control signal interface and the first output signal interface.

13. A magnetic resonance imaging system comprising:
a coil comprising:
an adapter comprising:
a control circuit having a first diode, a second diode, a third diode, a fourth diode, a fifth diode, and a sixth diode;
a control signal interface;
a first input signal interface;
a second input signal interface;
a first output signal interface; and
a second output signal interface,

wherein the control signal interface is configured to receive a tuning/detuning signal,
wherein the control circuit is configured to switch, according to the tuning/detuning signal, the first input signal interface and the second input signal interface to be in conduction with the first output signal interface and the second output signal interface,
wherein anodes of the first diode and the second diode are connected to the control signal interface,
wherein a cathode of the first diode, a cathode of the third diode, and the first input signal interface are connected to an anode of the sixth diode,
wherein a cathode of the second diode, a cathode of the fourth diode, and the second input signal interface are connected to an anode of the fifth diode,
wherein an anode of the third diode and a cathode of the fifth diode are connected to the first output signal interface, and
wherein an anode of the fourth diode and a cathode of the sixth diode are connected to the second output signal interface.

Assignees

• Chen Yan Hong
• Li wen ming
• Tan Jia Heng
• Tong Tong
• Siemens Ag

Inventors

• Chen Yan Hong
• Li wen ming
• Tan Jia Heng
• Tong Tong

Classifications

• G01R33/3664 Primary

  Switching for purposes other than coil coupling or decoupling, e.g. switching between a phased array mode and a quadrature mode, switching between surface coil modes of different geometrical shapes, switching from a whole body reception coil to a local reception coil or switching for automatic coil selection in moving table MR or for changing the field-of-view (G01R33/3671 takes precedence) · CPC title