Phased array knee coil

• US 7,042,222 B2
• Filed: 11/19/2004
• Issued: 05/09/2006
• Est. Priority Date: 11/19/2003
• Status: Active Grant

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Petropoulos, Labros, Zheng, Tsinghua, Anderson, Robert, Zhao, Shuren
• Primary Examiner(s): Shrivastav, Brij B.
• Application Number:
  US10/993,558
• Publication Number:
  US 20050134271A1
• Time in Patent Office: 536 Days
• Field of Search: 324/318, 324/322, 324/319, 324/309, 324/307, 324/300, 600/422
• US Class Current: 324/318
• CPC Class Codes: G01R 33/3415 comprising arrays of sub-coils , i.e. phased-array coils with flexible receiver channels
• CPC Class Codes: G01R 33/4833 using spatially selective excitation of the volume of interest, e.g. selecting non-orthogonal or inclined slices
• CPC Class Codes: G01R 33/5604 Microscopy; Zooming

Abstract

A phased-array knee coil is provided and includes a transmit coil array and a receive coil array having a plurality of coils configured to provide a first imaging mode and a second imaging mode.

Claims

1. A phased-array knee coil for a Magnetic Resonance Imaging (MRI) system, the phased-array knee coil comprising:

a transmit coil array; and

a receive coil array having a plurality of coils configured to provide a first imaging mode and a second imaging mode and wherein the plurality coils each include a first coil element defining an inner coil loop and a second coil element defining an outer coil loop with the first coil element providing the first imaging mode and the second coil element providing the second imaging mode, the first imaging mode being a zoom imaging mode and the second imaging mode being a full imaging mode.

2. A phased-array knee coil in accordance with claim 1 wherein each of the plurality of coils of the receive coil array are configured as lattice-shaped coil elements.

3. A phased-array knee coil in accordance with claim 1 wherein the transmit coil array comprises a twelve element quadrature birdcage coil.

4. A phased-array knee coil in accordance with claim 1 wherein the receive coil array comprises six lattice-shaped coils.

5. A phased-array knee coil in accordance with claim 1 wherein the transmit and receive coil arrays are configured to image a human knee.

6. A phased-array knee coil in accordance with claim 1 wherein the first and second imaging modes are configured to provide different imaging field-of-views.

7. A phased-array knee coil for a Magnetic Resonance Imaging (MRI) system, the phased-array knee coil comprising:

a transmit coil array including a birdcage coil; and

a receive coil array including a plurality of lattice-shaped coil elements, each of the lattice-shaped coil elements including a plurality of coils configured to provide a first imaging mode and a second imaging mode, the first and second imaging modes user selectable to provide different imaging field-of-views and wherein each of the lattice-shaped coil elements comprises an inner coil element and an outer coil element, the inner coil element conflaured to provide the first imaging mode and the outer coil element configured to provide the second imaging mode, the first imaging mode being a zoom imaging mode and the second imaging mode being a full imaging mode.

8. A phased-array knee coil in accordance with claim 7 wherein the birdcage coil comprises twelve elements and the receive coil array comprises six lattice-shaped coil elements.

9. A phased-array knee coil in accordance with claim 7 wherein each of a width of each of the inner and outer coil elements is about the same, and a length of the outer coil element is greater than a length of the inner coil element.

10. A phased-array knee coil in accordance with claim 7 wherein the inner coil elements are positioned within the outer coil elements.

11. A phased-array knee coil in accordance with claim 7 wherein the transmit coil array and receive coil array are each configured in a generally cylindrical shape.

12. A method of providing a phased-array knee coil for a Magnetic Resonance Imaging (MRI) system, the method comprising:

providing a transmit coil array; and

configuring a receive coil array having a plurality of coils to provide imaging operation in each of a first imaging mode and a second imaging mode, and in combination with the transmit coil array providing different fields-of-view for imaging in each of the first and second imaging modes and;

configuring the plurality of coils as an inner coil loop and an outer coil loop, the inner coil loop providing the first imaging mode and the outer coil loop providing the second imaging mode, and wherein the first imaging mode is a zoom imaging mode and the second imaging mode is a full imaging mode.

13. A method in accordance with claim 12 further comprising configuring the plurality of coils of the receive coil array as lattice-shaped coil elements.