GRADIENT MAGNETIC FIELD GENERATION MODULE USING PLURALITY OF COILS SO AS TO GENERATE GRADIENT MAGNETIC FIELD

• US 20180120393A1
• Filed: 11/15/2017
• Published: 05/03/2018
• Est. Priority Date: 05/21/2015
• Status: Active Grant

• Current Assignee: Bilkent University
• Original Assignee: Bilkent University
• Inventors: Atalar, Ergin, Taraghinia, Soheil, Ertan, Niyazi Koray
• Granted Patent: US 10,578,691 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 33/0023 Electronic aspects, e.g. circuits for stimulation, evaluation, control; Treating the measured signals; calibration G01R33/0017 takes precedence
• CPC Class Codes: G01R 33/022 Measuring gradient
• CPC Class Codes: G01R 33/385 using gradient magnetic field coils
• CPC Class Codes: G01R 33/3852 Gradient amplifiers; means for controlling the application of a gradient magnetic field to the sample, e.g. a gradient signal synthesizer
• CPC Class Codes: G01R 33/44 using nuclear magnetic resonance [NMR] G01R33/24, G01R33/62 take precedence

Abstract

Provided is a gradient magnetic field generation module using multiple coils to generate a gradient magnetic field. Provided is a gradient magnetic field generation module including: a gradient coil formed inside a main magnet and generating a gradient magnetic field and including a plurality of coils; and a gradient amplifier controlling at least one of a shape of the gradient magnetic field, a strength of the gradient magnetic field, and slew rate of the gradient magnetic field generated by the gradient coil, in which the plurality of coils is grouped into a plurality of coil groups and current which flows in the plurality of coils is independently controlled by the unit of a group by the gradient amplifier.

Claims

1. A gradient magnetic field generation module comprising:

a gradient coil formed inside a main magnet and generating a gradient magnetic field and including a plurality of coils; and

a gradient amplifier controlling at least one of a shape of the gradient magnetic field, a strength of the gradient magnetic field, and a slew rate of the gradient magnetic field generated by the gradient coil,

wherein the plurality of coils is grouped into a plurality of coil groups and current which flows in the plurality of coils is independently controlled by the unit of a group.

2. The gradient magnetic field generation module of claim 1, wherein a first core group and a second core group among the plurality of coil groups are grouped into a pair coil group, and

a direction of current which flows in the first coil group and a direction of current which flows in the second coil group are opposite directions.

3. The gradient magnetic field generation module of claim 1, wherein the plurality of coil groups is grouped into a plurality of pair coil groups and magnitudes of the current which flows in the plurality of pair coil groups, respectively are different from each other.

4. The gradient magnetic field generation module of claim 1, wherein the gradient coil generates at least one of an X-axis gradient magnetic field, a Y-axis gradient magnetic field, and a Z-axis gradient magnetic field.

5. The gradient magnetic field generation module of claim 1, wherein the gradient amplifier independently controls each of the plurality of coil groups to independently control a shape, a strength, and a slew rate of the gradient magnetic field generated by each of the plurality of coil groups.

6. The gradient magnetic field generation module of claim 1, wherein two or more coils adjacent to each other are grouped into a group the plurality of coils.