High-field MRI birdcage coil

A birdcage and coil technology, applied in magnetic resonance measurement, measuring devices, instruments, etc., can solve the problem that the imaging speed and resolution of the birdcage coil cannot meet the requirements, and achieve good gain effect, improved resolution, and good parameter performance Effect

Inactive Publication Date: 2016-08-24
HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to overcome the problem that the imaging speed and resolution of the low-field MRI imaging birdcage coils in the above-mentioned prior art cannot meet the requirements, and provide a high-performance MRI with goo

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  • High-field MRI birdcage coil

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Embodiment Construction

[0024] A specific embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiment.

[0025] With the development of magnetic resonance technology, a new type of image inspection technology, magnetic resonance imaging (MRI), is currently widely used in medical, nuclear physics and other fields. The requirements of actual imaging technology are getting higher and higher, and low-field MRI imaging can no longer meet the requirements. The research on coils is also pursuing new breakthroughs. Among them, high-field MRI and birdcage coils are widely used in magnetic resonance imaging technology.

[0026] The invention discloses the structure, design method and testing process of an 8-channel high-field birdcage coil with a Larmor frequency of 298.2MHz and a magnetic flux of 7T. First, the parameters of the birdca...

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Abstract

The invention discloses a high-field MRI birdcage coil. The high-field MRI birdcage coil comprises two metal rings with the same structures, wherein the metal rings are respectively located at the upper end and the lower end; the two metal rings are connected with each other via a plurality of cylindrical channels made of a metal material in a vertical direction; the cylindrical channels are used for equally dividing the metal ring at the upper end and the metal ring at the lower end into a plurality of parts; each cylindrical channel is divided into an upper part and a lower part from the middle; the upper and lower parts of each cylindrical channel are electrically connected with each other via a capacitor device. The high-field MRI birdcage coil also comprises an outer metal cover; the outer metal cover is covered on the outer side of the metal rings and the cylindrical channels, has a shielding effect and is formed by a radio frequency coil wound to be cylindrical. The high-field MRI birdcage coil is good in parameter performance; an eight-channel birdcage coil is provided for a high-field (7T) magnetic resonance imaging system; the resolution ratio of generated images is improved; the requirements on imaging of a magnetic resonance technique at present can be met.

Description

technical field [0001] The invention belongs to the technical field of magnetic resonance, and in particular relates to a high-field MRI birdcage coil. Background technique [0002] The demand for magnetic resonance technology in the medical field gave birth to the birdcage coil. With the continuous advancement of magnetic resonance imaging technology, the market size of birdcage coils and related dielectric materials has risen sharply. Birdcage coils have been widely used in medicine, biomedicine and other fields. However, the birdcage coil in the prior art has the disadvantage of low spatial resolution, resulting in low resolution of the generated image. With the further improvement of the operating frequency of the birdcage coil, the spatial resolution of the imaging and the increase of the signal-to-noise ratio of the image have significantly improved the magnetic resonance imaging technology. [0003] Birdcage coils are widely used in medicine, such as checking the l...

Claims

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Application Information

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IPC IPC(8): G01R33/34
CPCG01R33/34076
Inventor 车向前边莉王赫
Owner HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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