Magnetic resonance imaging apparatus and local coil assembly and local coil thereof

Patent metadata

Field	Value
Publication number	US-10101419-B2
Application number	US-201414458823-A
Country	US
Kind code	B2
Filing date	Aug 13, 2014
Priority date	Aug 14, 2013
Publication date	Oct 16, 2018
Grant date	Oct 16, 2018

Abstract

A local coil assembly for an MRI apparatus includes an RF channel setting unit, a basic coil having a first slot, and a first additional coil connected to the first slot. Each of the basic coil and the first additional coil includes one or more receiving channels. The RF channel setting unit is configured for setting a receiving channel of the basic coil and a receiving channel of the first additional coil. The basic coil is configured for receiving an RF signal according to a receiving channel set by the RF channel setting unit. The first additional coil is configured for receiving an RF signal according to a receiving channel set by the RF receiving channel setting unit. The present teachings are compatible with multiple coils, and support the combined use of multiple coils.

First claim

The invention claimed is:

1. A local coil assembly for an MRI apparatus, the local coil assembly comprising:
an RF channel setting unit;
a basic coil comprising a first slot and a second slot, wherein the basic coil is a local coil comprising a head/neck coil;
a first additional coil connected to the first slot, wherein the first additional coil is a local coil comprising a large/small flexible coil, a body coil, a limb coil, a shoulder coil, an ankle coil, or a spine coil; and
a second additional coil connected to the second slot;
wherein the basic coil and the first additional coil are local coils;
wherein each of the basic coil and the first additional coil comprises one or more receiving channels;
wherein the RF channel setting unit is configured for setting a receiving channel of the basic coil, a receiving channel of the first additional coil, and a receiving channel of the second additional coil;
wherein the basic coil is configured for receiving an RF signal on a receiving channel set by the RF channel setting unit;
wherein the first additional coil is configured for receiving an RF signal on a receiving channel set by the RF channel setting unit;
wherein the second additional coil is configured for receiving an RF signal on a receiving channel set by the RF channel setting unit;
wherein the basic coil comprises an upper half and a lower half; and
wherein the first slot and the second slot are arranged on opposite sides of the lower half of the basic coil.

2. The local coil assembly of claim 1 , wherein the RF channel setting unit is further configured for activating or deactivating one or more receiving channels of the basic coil, and wherein the RF channel setting unit is further configured for activating or deactivating one or more receiving channels of the first additional coil.

3. The local coil assembly of claim 2 , further comprising:
an output unit configured for outputting an RF signal;
wherein the output RF signal is configured to be received by a receiving channel set by the RF channel setting unit.

4. The local coil assembly of claim 1 , further comprising:
a third additional coil;
wherein the basic coil further comprises a third slot;
wherein the third additional coil is connected to the third slot;
wherein the RF channel setting unit is further configured for setting a receiving channel of the third additional coil; and
wherein the third additional coil is configured for receiving an RF signal on a receiving channel set by the RF channel setting unit.

5. The local coil assembly of claim 4 , further comprising:
an output unit configured for outputting an RF signal;
wherein the output RF signal is configured to be received by a receiving channel set by the RF channel setting unit.

6. The local coil assembly of claim 4 , further comprising:
a fourth additional coil;
wherein the basic coil further comprises a fourth slot;
wherein the fourth additional coil is connected to the fourth slot;
wherein the RF channel setting unit is further configured for setting a receiving channel of the fourth additional coil; and
wherein the fourth additional coil is configured for receiving an RF signal on a receiving channel set by the RF channel setting unit.

7. The local coil assembly of claim 6 , further comprising:
an output unit configured for outputting an RF signal;
wherein the output RF signal is configured to be received by a receiving channel set by the RF channel setting unit.

8. The local coil assembly of claim 1 , further comprising:
an output unit configured for outputting an RF signal;
wherein the output RF signal is configured to be received by a receiving channel set by the RF channel setting unit.

9. The local coil assembly of claim 8 , wherein the output unit comprises an output cable connected to a receiver.

10. An MRI apparatus, comprising:
a magnetic resonance coil assembly comprising:
an RF channel setting unit;
a basic coil comprising a first slot and a second slot, wherein the basic coil is a local coil comprising a head/neck coil;
a first additional coil connected to the first slot, wherein the first additional coil is a local coil comprising a large/small flexible coil, a body coil, a limb coil, a shoulder coil, an ankle coil, or a spine coil; and
a second additional coil connected to the second slot;

wherein the basic coil and the first additional coil are local coils;
wherein each of the basic coil and the first additional coil comprises one or more receiving channels;
wherein the RF channel setting unit is configured for setting a receiving channel of the basic coil, a receiving channel of the first additional coil, and a receiving channel of the second additional coil;
wherein the basic coil is configured for receiving an RF signal on a receiving channel set by the RF channel setting unit;
wherein the first additional coil is configured for receiving an RF signal on a receiving channel set by the RF channel setting unit
wherein the second additional coil is configured for receiving an RF signal on a receiving channel set by the RF channel setting unit;
wherein the basic coil comprises an upper half and a lower half; and
wherein the first slot and the second slot are arranged on opposite sides of the lower half of the basic coil.

Assignees

• Li wen ming
• Tong Tong
• Wang Jianmin
• Siemens Ag

Inventors

• Li wen ming
• Tong Tong
• Wang Jianmin

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

• G01R33/3621

  NMR receivers or demodulators, e.g. preamplifiers, means for frequency modulation of the MR signal using a digital down converter, means for analog to digital conversion [ADC] or for filtering or processing of the MR signal such as bandpass filtering, resampling, decimation or interpolation · CPC title

• G01R33/3415

  comprising arrays of sub-coils {, i.e. phased-array coils with flexible receiver channels} · CPC title