A Magnetic Resonance Imaging RF Coil Based on Fractal Composite Left/Handed Microstrip Lines
A magnetic resonance imaging and radio frequency coil technology, which is used in magnetic resonance measurement, measurement of magnetic variables, instruments, etc., can solve the problems of weak radio frequency signals and easy interference from external noise, so as to achieve clear magnetic resonance imaging images and improve image quality. Effect
Inactive Publication Date: 2020-05-01
HEFEI UNIV OF TECH
View PDF9 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Since the radio frequency signal collected by magnetic resonance imaging equipment is very weak, it is easily interfered by external noise.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0054] A detailed description will be given below in conjunction with the accompanying drawings.
[0055] Such as figure 1 As shown, the present invention is a composite left / right hand microstrip radio frequency coil based on fractal structure, and the radio frequency coil is composed of multiple channels. The multi-channel microstrip coil can be a breast radio frequency coil arranged in a parabola, or a cylindrical head coil, neck coil, knee coil and body coil etc. can be formed. A single channel microstrip line includes a dielectric substrate 1, a ground plane 2 and a metal patch 3, the ground plane 2 is located on the back of the dielectric substrate 1, and the metal patch 3 is arranged on the front of the dielectric substrate 1. The metal patch 3 is composed of a first low-impedance microstrip 31, a first high-impedance microstrip 32, a second high-impedance microstrip 33 and a second low-impedance microstrip 34, and the high-low impedance microstrip passes through the f...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| height | aaaaa | aaaaa |
| width | aaaaa | aaaaa |
Login to View More
Abstract
The invention relates to a magnetic resonance imaging radio frequency coil based on fractal composite right / left-handed microstrip lines. Each radio frequency channel is designed by composite right / left-handed microstrip lines in an H fractal structure; a dielectric substrate, a grounding plate and a metal patch are included; the grounding plate is located on the back surface of the dielectric substrate; the metal patch is arranged on the front surface of the dielectric substrate; the metal patch is composed of a first low-impedance microstrip, a first high-impedance microstrip, a second high-impedance microstrip and a second low-impedance microstrip; the high and low-impedance microstrips are connected through first non-magnetic patch capacitors, and a symmetrically-distributed composite right / left-handed microstrip line structure with a second non-magnetic patch capacitor as the center is formed. The composite right / left-handed microstrip line design provides a new design method for improving the imaging signal-to-noise ratio of a region of interest, the H fractal structure can further improve the magnetic field uniformity of the region of interest, the design can be applied to radio frequency coils such as a breast coil, a head coil, a neck coil, and a knee coil, and the magnetic resonance image is more distinct.
Description
technical field [0001] The present invention relates to the technical field of magnetic resonance imaging, and relates to a radio frequency coil based on fractal composite left / right hand microstrip lines, more specifically a fractal composite left / hand microstrip line for improving the magnetic field strength and uniformity in magnetic resonance imaging radio frequency coils. / Right hand microstrip line MRI RF coil. Background technique [0002] As a new medical imaging method, magnetic resonance imaging technology has great advantages in clinical medicine and disease diagnosis, especially in the application of functional degenerative diseases such as Alzheimer's disease and Parkinson's disease. The basic principle of magnetic resonance imaging is to place the human body in a specially coded strong magnetic field, and use radio frequency pulses to excite the hydrogen nuclei of the human body, so that the human hydrogen nuclei ( 1 H) Absorb and store energy. When the radi...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01R33/34
CPCG01R33/34092
Inventor 李炳南吴杰
Owner HEFEI UNIV OF TECH