RF COIL UNIT COMPRISING DIELECTRIC STRUCTURE, AND MAGNETIC RESONANCE IMAGING SYSTEM COMPRISING SAME

• US 20170285118A1
• Filed: 01/21/2015
• Published: 10/05/2017
• Est. Priority Date: 09/01/2014
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Kyoungnam
• Granted Patent: US 10,698,044 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 5/055 involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
• CPC Class Codes: G01R 33/34046 Volume type coils, e.g. bird-cage coils; Quadrature bird-cage coils; Circularly polarised coils
• CPC Class Codes: G01R 33/34076 Birdcage coils
• CPC Class Codes: G01R 33/5659 caused by a distortion of the RF magnetic field, e.g. spatial inhomogeneities of the RF magnetic field G01R33/56509, G01R33/56518, G01R33/56536 take precedence

Abstract

Provided are an RF coil unit and a magnetic resonance imaging system. The RF coil unit may include a base on which RF coil elements are formed and a dielectric structure on an inner side of the base. The dielectric structure may include a plurality of dielectric structure units. The dielectric structure units may be connected to each other by connection units. The dielectric structure may include an inner space for placing an object therein. The dielectric structure includes a high dielectric material.

Claims

1. An RF coil unit for a magnetic resonance imaging system, the RF coil unit comprising:

at least one RF coil element on a base having a cylindrical shape with a circular or oval shaped cross-section; and

a dielectric structure that is formed on an inner side of the base.

2. The RF coil unit of claim 1, wherein the dielectric structure comprises a plurality of dielectric structure units.

3. The RF coil unit of claim 2, wherein the dielectric structure units are connected to each other by connection units formed of a conductive material.

4. The RF coil unit of claim 3, wherein the dielectric structure units respectively comprise grooves into which the connection units are inserted.

5. The RF coil unit of claim 1, wherein the dielectric structure comprises an inner space for placing an object.

6. The RF coil unit of claim 5, wherein the dielectric structure comprises a though hole connected to the inner space of the dielectric structure.

7. The RF coil unit of claim 1, wherein the dielectric structure comprises a high dielectric material.

8. The RF coil unit of claim 7, wherein the dielectric structure comprises BaTiO₃ or CaTiO₃.

9. The RF coil unit of claim 1, wherein the RF coil unit is a volume type RF coil unit.

10. A magnetic resonance imaging system comprising:

an RF coil unit comprising at least one RF coil element on a base having a cylindrical shape with a circular or oval shaped cross-section and a dielectric structure that is formed on an inner side of the base.

11. The magnetic resonance imaging system of claim 10, wherein the dielectric structure comprises a plurality of dielectric structure units.

12. The magnetic resonance imaging system of claim 11, wherein the dielectric structure units are connected to each other by connection units formed of a conductive material.

13. The magnetic resonance imaging system of claim 12, wherein the dielectric structure units respectively comprise grooves into which the connection units are inserted.

14. The magnetic resonance imaging system of claim 10, wherein the dielectric structure comprises an inner space for placing an object.

15. The magnetic resonance imaging system of claim 14, wherein the dielectric structure comprises a through hole connected to the inner space of the dielectric structure.

16. The magnetic resonance imaging system of claim 10, wherein the dielectric structure comprises a high dielectric material.

17. The magnetic resonance imaging system of claim 10, wherein the dielectric structure comprises BaTiO₃ or CaTiO₃.