Multilayer MR local coil

Patent metadata

Field	Value
Publication number	US-11415648-B2
Application number	US-201916664772-A
Country	US
Kind code	B2
Filing date	Oct 25, 2019
Priority date	Oct 26, 2018
Publication date	Aug 16, 2022
Grant date	Aug 16, 2022

Abstract

A magnetic resonance (MR) local coil and an MR apparatus are provided. The MR local coil includes at least one antenna layer, at least one first layer, at least one second layer, and at least one third layer. In this structure, at least one MR antenna is arranged on the antenna layer. The at least one first layer is arranged between the at least one antenna layer and the at least one second layer, and the at least one second layer is arranged between the at least one first layer and the at least one third layer.

First claim

The invention claimed is:

1. A magnetic resonance (MR) local coil comprising:
at least one antenna layer;
at least one first layer, wherein the at least one first layer is liquid-tight;
at least one second layer;
at least one third layer; and
at least one MR antenna arranged on the at least one antenna layer,
wherein a portion of the at least one first layer is arranged between the at least one antenna layer and the at least one second layer,
wherein the at least one second layer is arranged between the at least one first layer and the at least one third layer, and
wherein the at least one first layer, the at least one second layer, and the at least one third layer are non-antenna layers or not the at least one MR antenna.

2. The MR local coil of claim 1 , wherein one or more first layers of the at least one first layer, one or more second layers of the at least one second layer, and one or more third layers of the at least one third layer are arranged on both sides of the at least one antenna layer, respectively.

3. The MR local coil of claim 1 , wherein the at least one first layer, the at least one second layer, and the at least one third layer are flexible at least in certain sections.

4. The MR local coil of claim 1 , wherein the at least one first layer is movable relative to the at least one second layer, the at least one second layer is movable relative to the at least one third layer, or a combination thereof.

5. The MR local coil of claim 1 , wherein the at least one antenna layer has no fixed connection to the at least one first layer.

6. The MR local coil of claim 1 , wherein the at least one antenna layer is attached at least at certain points, in certain sections, or at certain points and in certain sections to the at least one first layer.

7. The MR local coil of claim 6 , wherein the at least one antenna layer comprises at least one rigid section in which the at least one antenna layer is attached to the at least one first layer.

8. The MR local coil of claim 1 , wherein the at least one first layer is configured to hold at least one component arranged on the at least one antenna layer in position.

9. The MR local coil of claim 1 , wherein the at least one first layer encloses the antenna layer at least partially.

10. The MR local coil of claim 9 , wherein the at least one first layer encloses the antenna layer completely, such that the at least one first layer surrounds all sides of the antenna layer.

11. The MR local coil of claim 1 , wherein the at least one second layer is a spacer layer configured to provide a predefined minimum clearance between the at least one MR antenna and an exterior of the MR local coil.

12. The MR local coil of claim 11 , wherein the spacer layer comprises a fibrous web, a felt mat, a matrix having a plurality of interlinked elements, a perforated matrix, or any combination thereof.

13. The MR local coil of claim 1 , wherein the at least one third layer is a cover layer that encloses the at least one antenna layer, the at least one first layer, and the at least one second layer at least partially.

14. The MR local coil of claim 13 , wherein the at least one third layer encloses the at least one antenna layer, the at least one first layer, and the at least one second layer completely.

15. The MR local coil of claim 1 , wherein the at least one third layer is elastic.

16. The MR local coil of claim 1 , wherein the at least one first layer, the at least one second layer, or the at least one first layer and the at least one second layer are configured as asymmetric relative to the antenna layer.

17. A magnetic resonance (MR) apparatus comprising:
an MR local coil comprising:
at least one antenna layer;
at least one first layer;
at least one second layer;
at least one third layer; and
at least one MR antenna arranged on the at least one antenna layer,

wherein a portion of the at least one first layer is arranged between the at least one antenna layer and the at least one second layer,
wherein the at least one second layer is arranged between the at least one first layer and the at least one third layer, and
wherein the at least one first layer, the at least one second layer, and the at least one third layer are non-antenna layers or not the at least one MR antenna.

18. The MR apparatus of claim 17 , wherein one or more first layers of the at least one first layer, one or more second layers of the at least one second layer, and one or more third layers of the at least one third layer are arranged on both sides of the at least one antenna layer, respectively.

19. The MR apparatus of claim 17 , wherein the at least one first layer, the at least one second layer, and the at least one third layer are flexible at least in certain sections.

20. A magnetic resonance (MR) local coil comprising:
at least one antenna layer;
at least one first layer, wherein the at least one first layer encloses the antenna layer completely, such that the at least one first layer surrounds all sides of the antenna layer;
at least one second layer;
at least one third layer; and
at least one MR antenna arranged on the at least one antenna layer,
wherein a portion of the at least one first layer is arranged between the at least one antenna layer and a portion of the at least one second layer, and
wherein a portion of the at least one second layer is arranged between the portion of the at least one first layer and a portion of the at least one third layer.

Assignees

• Siemens Healthcare Gmbh

Inventors

• Candidus Yvonne
• Kundner Thomas
• Strauchmann Christina
• Zigann Martin
• Zink Stephan

Classifications

• G01R33/3415

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

• H01F7/20

  without armatures (cores H01F3/00; coils H01F5/00 {; shaping metal by applying magnetic forces B21D26/14; electromagnets specially adapted for NMR applications G01R33/381}) · CPC title

• G01R33/341 Primary

  comprising surface coils · CPC title

• G01R33/34007

  Manufacture of RF coils, e.g. using printed circuit board technology; additional hardware for providing mechanical support to the RF coil assembly or to part thereof, e.g. a support for moving the coil assembly relative to the remainder of the MR system · CPC title

• H01F7/202

  Electromagnets for high magnetic field strength (for superconducting electromagnets H01F6/00; for transformers or inductances without a magnetic core H01F30/08) · CPC title