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Wrist coil system

A coil and wrist technology, applied in medical science, measuring devices, instruments, etc., can solve the problems of artifacts, the large size of the wrist coil and uncomfortable placement, and the low signal noise of the wrist coil, and the effect of reducing the possibility of artifacts is achieved.

Active Publication Date: 2015-03-25
SHENZHEN UNITED IMAGING HEALTHCARE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The problem to be solved by the present invention is to provide a wrist coil system applied to magnetic resonance scanning, which can solve the problem of the low signal-to-noise ratio of the wrist coil that only receives signals in the prior art, and the discomfort caused by the large volume of the cylindrical transceiver-integrated wrist coil. It is easy to place, and too close to the body will cause the problem of abdominal image curling and artifacts

Method used

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Embodiment Construction

[0028] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be further described below in conjunction with the accompanying drawings and examples.

[0029] In the technical solution of the present invention, the wrist coil system is composed of coils with a two-layer structure, namely the first coil and the second coil. The first coil is a local volume coil and serves as a radio frequency signal transmitting coil, the second coil serves as a radio frequency signal receiving coil, and the second coil is arranged inside the first coil. Wherein, the first coil is preferably a birdcage structure coil, figure 1 It is a structural diagram of the first coil 100 , the birdcage coil is composed of end rings 101 on both sides, and a plurality of rod antennas 102 located between the two end rings 101 that are parallel to each other. The structure of the first coil is not limited t...

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Abstract

The invention discloses a wrist coil system which comprises first coils and second coils. The first coils are partial volume coils and the first coils and the second coils are distributed internally and externally. The first coils are radio-frequency signal emitting coils. The second coils are radio-frequency signal receiving coils and located in the first coils. The wrist coil system has the self-emitting function, radio-frequency excitation is only conducted on a wrist region, a shape following structure is adopted, the system is convenient to place in clinic application, image anti-facts are reduced, and abdomen image folds are reduced.

Description

technical field [0001] The invention belongs to the field of magnetic resonance local radio frequency coils, in particular to a wrist coil system. Background technique [0002] In the field of medical imaging, the technical principle of the magnetic resonance imaging (MRI) system is to establish a basically uniform and time-constant main magnetic field B0 in the examination area, place the object to be imaged in the main magnetic field, and then pass the magnetic resonance radio frequency RF pulse Excitation is performed to tilt the selected hydrogen nuclei in the object into a plane transverse to the main magnetic field region. Eventually, the resonant hydrogen nuclei can decay or rearrange according to the main magnetic field to give rise to magnetic resonance echoes or MR signals. Wherein, various echoes constituting the MR signal are encoded by the gradient magnetic field established in the main magnetic field. Raw magnetic resonance echo data from the MRI scanner or d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/3415A61B5/055
Inventor 张强王文平
Owner SHENZHEN UNITED IMAGING HEALTHCARE CO LTD
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