Unlock instant, AI-driven research and patent intelligence for your innovation.

Magnetic resonance radio frequency coil based on fractal alternating impedance micro-strip

A technology of radio frequency coils and microstrip lines, applied in the direction of magnetic resonance measurement, etc., can solve the problems of low clarity of magnetic resonance images and affect diagnosis, etc., to achieve the benefits of magnetic resonance imaging, ensure clarity, improve diagnostic efficiency and accuracy degree of effect

Inactive Publication Date: 2015-04-08
CHINA JILIANG UNIV
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the insufficient uniformity of the magnetic field, the clarity of the magnetic resonance image produced is not high, which affects the diagnosis.

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Magnetic resonance radio frequency coil based on fractal alternating impedance micro-strip
  • Magnetic resonance radio frequency coil based on fractal alternating impedance micro-strip
  • Magnetic resonance radio frequency coil based on fractal alternating impedance micro-strip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1 is the design of three sections of first-order Koch fractal alternating impedance, such as figure 1 As shown, the alternate arrangement of width and narrowness of the metal patches refers to the alternate arrangement of two sections of wide sides and one section of narrow sides, and the said Koch fractal is a first-order Koch fractal.

Embodiment 2

[0030] Embodiment 2 is the design of three sections of second-order Koch fractal alternating impedance, such as figure 2 As shown, the alternate arrangement of width and narrowness of the metal patches refers to the alternate arrangement of two sections of wide sides and one section of narrow sides, and the said Koch fractal is a second-order Koch fractal.

Embodiment 3

[0031] Embodiment 3 is the design of five sections of first-order Koch fractal alternating impedance, such as image 3 As shown, the alternate arrangement of the width and narrowness of the metal patches refers to the alternate arrangement of three sections of wide sides and two sections of narrow sides, and the described Koch fractal is a first-order Koch fractal; the width of the described wide sides is the narrow side Four times of , the following numerical values ​​are given here for a specific description. The widths of the wide and narrow sides are 20mm and 5mm respectively, and the lengths are 20mm and 25mm respectively; the difference between the first-order Koch fractal alternating impedance microstrip line RF coil and the fractal alternating impedance microstrip line RF coil is that the first-order Koch fractal curve is used to replace Three segments of broadside in an RF coil of alternating impedance microstrip lines.

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

No PUM Login to View More

Abstract

The invention discloses a magnetic resonance radio frequency coil based on a fractal alternating impedance micro-strip. The magnetic resonance radio frequency coil is made of the micro-strip, wherein the micro-strip comprises a dielectric substrate (1), an earth plate and metal sheets (2), the earth plate is arranged on the backside of the dielectric substrate (1), the metal sheets (2) are arranged on the front side of the dielectric substrate (1) alternately in a wide and narrow manner, and the wide side (2.1) is formed from Koch fractal. According to the structure disclosed by the invention, the coil is designed into the shape alternative in high and low impedances in axial direction of the long axis of the micro-strip, so that the magnetic field of the coil in the axial direction of the long axis become more uniform, and the magnetic field is further improved in uniformity on the basis of the Koch fractal upon the wide side, so that the magnetic resonance imaging is facilitated, the image definition is improved and the diagnostic efficiency and the accuracy are improved.

Description

technical field [0001] The invention relates to the field of magnetic resonance, in particular to a magnetic resonance radio frequency coil based on fractal alternating impedance microstrip lines. Background technique [0002] Resonance is a specific physical phenomenon. In order to make a material under the action of an external magnetic field produce magnetic resonance, a certain radio frequency excitation is usually required, that is, radio frequency excitation is the condition for generating magnetic resonance phenomenon. Common magnetic resonance images in clinical practice show the distribution of hydrogen nuclei contained in human tissues and organs. In order to accurately obtain the position of the hydrogen nucleus in space, three mutually perpendicular linear gradient magnetic fields are often superimposed on the constant main magnetic field. Not the same. Therefore, the Larmor frequency of proton nuclei at different positions can be used to mark the spatial posit...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01R33/36
Inventor 徐文龙陶贵生张鞠成徐冰俏
Owner CHINA JILIANG UNIV