MRT SURFACE COIL ARRAY

• US 20130123612A1
• Filed: 05/04/2012
• Published: 05/16/2013
• Est. Priority Date: 05/06/2011
• Status: Abandoned Application

• Current Assignee: Siemens AG
• Original Assignee: Jorg Rothard
• Inventors: ROTHARD, Jrg
• Application Number:
  US13/464,922
• Publication Number:
  US 20130123612A1
• Time in Patent Office: Days
• US Class Current: 600/422
• CPC Class Codes: A61B 2562/0223 Magnetic field sensors
• CPC Class Codes: A61B 2562/046 in a matrix array
• CPC Class Codes: A61B 2576/02 specially adapted for a particular organ or body part
• CPC Class Codes: A61B 2576/023 for the heart
• CPC Class Codes: A61B 5/055 involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
• CPC Class Codes: A61B 5/6823 Trunk, e.g., chest, back, abdomen, hip
• CPC Class Codes: A61B 5/6891 Furniture
• CPC Class Codes: G01R 33/3415 comprising arrays of sub-coils , i.e. phased-array coils with flexible receiver channels
• CPC Class Codes: G01R 33/3664 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 Class Codes: G16H 30/40 for processing medical images, e.g. editing

Abstract

A surface coil for an imaging system includes a spine coil array that includes a plurality of coil elements. The surface coil also includes a cardiac coil array including a plurality of coil elements. The spine coil array and the cardiac coil array are both arranged in the same housing.

Claims

1. A surface coil for an imaging system, the surface coil comprising:

a spine coil array comprising a first plurality of coil elements; and

a cardiac coil array comprising a second plurality of coil elements,

wherein the spine coil array and the cardiac coil array are both arranged in a housing.

2. The surface coil as claimed in claim 1, wherein the spine coil array and the cardiac coil array are both arranged in a patient couch for a magnetic resonance tomography (MRT) machine.

3. The surface coil as claimed in claim 1, wherein a region of the heart of a patient is positionable in a region above the cardiac coil array.

4. The surface coil as claimed in claim 1, wherein a spinal region of a patient is positionable in a region vertically above the spine coil array.

5. The surface coil as claimed in claim 1, wherein the spine coil array is an array operable to acquire an image of a spine or of a sub-region of the spine of an examination subject.

6. The surface coil as claimed in claim 1, wherein the cardiac coil array is an array operable to acquire an image of the heart of an examination subject.

7. The surface coil as claimed in claim 1, wherein the spine coil array and the cardiac coil array are each arranged within separate layers.

8. The surface coil as claimed in claim 1, wherein the spine coil array and the cardiac coil array are arranged within layers that are parallel to each other.

9. The surface coil as claimed in claim 1, further comprising a switching device,

wherein depending on a switch-setting of the switching device, either only coils of the spine coil array or only coils of the cardiac coil array are selectively connected to an analysis unit for signals received from the examination subject.

10. The surface coil as claimed in claim 9, wherein at a point in time, only the coil array that is not being used at the point in time is disabled, is not connected to an analysis unit for signals received from the examination subject, or a combination thereof.

11. The surface coil as claimed in claim 1, wherein the density of the coil elements of the first plurality of coil elements is greater than the density of the coil elements of the second plurality of coil elements.

12. The surface coil as claimed in claim 1, wherein the cardiac coil array has a density of the coil elements that is more than twice as great as a density of the coil elements of the spine coil array.

13. The surface coil as claimed in claim 1, wherein the cardiac coil array has a density of the coil elements that is more than three times as great as a density of the coil elements of the spine coil array.

14. The surface coil as claimed in claim 1, wherein a density of the coil elements of the cardiac coil array is constant in a region of the cardiac coil array, a density of the coil elements of the spine coil array is constant in a region of the spine coil array, or a combination thereof.

15. The surface coil as claimed in claim 1, wherein the spine coil array is suitable for imaging the entire spine of an examination subject, is at least 180 cm, or a combination thereof.

16. The surface coil as claimed in claim 1, wherein the length of the cardiac coil array is less than a third of the spine coil array in the z-direction.

17. The surface coil as claimed in claim 2, wherein the second plurality of the coil elements are located only in a region of the patient couch that is closer to the MRT machine in an insertion direction of the patient couch, or in a region that is one half or one third of the patient couch.

18. The surface coil as claimed in claim 1, wherein the surface coil is a magnetic resonance tomography (MRT) surface coil.

19. The surface coil as claimed in claim 9, wherein the switching device comprises PIN diodes.

20. The surface coil as claimed in claim 12, wherein the density of the coil elements of the cardiac coil array is more than twice as great as the density of the coil elements of the spine coil in the z-direction.

21. The surface coil as claimed in claim 1, wherein the density of the coil elements of the cardiac coil array is more than three times as great as the density of the coil elements of the spine coil array in the z-direction.

22. The surface coil as claimed in claim 15, wherein the spine coil array is at least 190 cm.

23. The surface coil as claimed in claim 15, wherein the spine coil array is at least 200 cm.

24. The surface coil as claimed in claim 16, wherein the length of the cardiac coil array is less than a quarter of the spine coil array in the z-direction.

25. The surface coil as claimed in claim 16, wherein the length of the cardiac coil array is less than a fifth of the length of the spine coil array in the z-direction.