# US 10,481,224 B2 · RF surface coil unit and magnetic resonance imaging system comprising same

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- Number: US 10,481,224 B2
- Document ID: US10481224B2
- Status: Granted
- Kind: B2
- Application number: 15/318,090
- Filed: 2015-06-10
- Published: 2017-05-04
- Granted: 2019-11-19
- Earliest claimed: 2014-06-12
- Assignees: Samsung Electronics Co., Ltd.
- Applicants: Samsung Electronics Co., Ltd.
- Inventors: Kyoungnam Kim
- Web page: https://patentgrep.com/patent/US10481224B2

## CPC

- G01R 33/341: comprising surface coils
- A61B 5/055: involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
- G01R 33/34061: {Helmholtz coils}
- G01R 33/3415: comprising arrays of sub-coils {, i.e. phased-array coils with flexible receiver channels}
- 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)}
- G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12)
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A radio frequency (RF) surface coil unit and a magnetic resonance imaging (MRI) system including the same are provided. The RF surface coil unit is a bulk-type RF surface coil, and includes a plurality of RF coil elements formed on a cylindrical-shaped base, wherein at least one pair of the plurality of RF coil elements include facing RF coil elements that are electrically connected to each other and are formed as one channel.

## Claims

### Claim 1

A magnetic resonance imaging (MRI) system, the system comprising:
a plurality of radio frequency (RF) coils arranged on a cylindrical base, where at least one pair of the plurality of RF coils are respective facing RF coils; and
a conductive layer configured to respectively electrically connect the respective facing RF coils to each other across a first end of the base opposing a second open end of the base,
wherein the conductive layer forms a loop coil on the first end of the cylindrical base and is configured to apply a uniform magnetic field to an object penetrating the second end.

### Claim 2 (depends on 1)

The system of claim 1, wherein the plurality of RF coils each have a loop shape.

### Claim 3 (depends on 1)

The system of claim 1, wherein the respective facing RF coils each together respectively form corresponding channels.

### Claim 4 (depends on 3)

The system of claim 3, wherein the respective facing RF coils are each together respectively configured to form corresponding linear fields.

### Claim 5 (depends on 4)

The system of claim 4, wherein the corresponding linear fields overlap within an inner side of the cylindrical base.

### Claim 6 (depends on 1)

The system of claim 1, wherein a size of a loop of the loop coil is equal to or less than a size of a loop formed by one of the respective facing RF coils.

### Claim 7 (depends on 1)

The system of claim 1, wherein the conductive layer is connected to an RF source.