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Method, device and magnetic resonance imaging system for determining the position of magnetic resonance coil

A technology of coil position and magnetic resonance, applied in the direction of magnetic resonance measurement, measuring devices, and measuring magnetic variables, etc., can solve the problems of magnetic resonance signal interference of markers, error-prone, and influence on the correct selection of coils, etc., to improve accuracy and Accuracy, the effect of solving signal distortion and loss

Active Publication Date: 2021-09-28
SHANGHAI NEUSOFT MEDICAL TECH LTD +1
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Problems solved by technology

The determination of the coil position is the basis for the correct selection of the coil. If the coil position identification is not accurate, it will affect the correct selection of the coil, and then affect the image quality.
[0004] In the related art, the method of adding markers to the coil is usually used to identify the position of the coil. This identification method is slow in recognition speed and error-prone, and the markers are likely to interfere with the magnetic resonance signal.

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  • Method, device and magnetic resonance imaging system for determining the position of magnetic resonance coil
  • Method, device and magnetic resonance imaging system for determining the position of magnetic resonance coil
  • Method, device and magnetic resonance imaging system for determining the position of magnetic resonance coil

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[0040] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0041] see figure 1 , which simply shows the structure diagram of the MRI system. Such as figure 1 As shown, when the patient 110 is doing an MRI scan, the patient 110 lies supine or prone on the scanning bed 120, and the scanning bed 120 can be moved along the figure 1 Move in the direction of the arrow in , so that the scanning bed 120 drives the patient 110 into the cavity 130 fo...

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Abstract

The present disclosure provides a method and device for determining the position of a magnetic resonance coil, and a magnetic resonance imaging system. The method includes: acquiring a magnetic resonance signal received by the coil in a pre-scan, and determining projection data of the coil; according to the projection data and the corresponding gradient distortion correction factor, determine the initial center of gravity position of the coil; calculate the initial center of gravity position relative to the The offset of the physical center of gravity of the coil; the initial position of the center of gravity is offset by the offset to obtain the physical center of gravity of the coil. The embodiment of the present disclosure has fast calculation speed and avoids the interference of markers on magnetic resonance signals; and solves the calculation deviation caused by signal distortion and loss when the coil is at the edge of imaging, and improves the accuracy and accuracy of coil positioning.

Description

technical field [0001] The present disclosure relates to the technical field of magnetic resonance imaging, and in particular to a method, a device and a magnetic resonance imaging system for determining the position of a magnetic resonance coil. Background technique [0002] Magnetic Resonance Imaging (MRI) is one of the main imaging methods of modern medical imaging. The basic principle of magnetic resonance imaging is based on the phenomenon of magnetic resonance, using radio frequency to excite hydrogen protons in the human body, using gradient fields to encode positions, and using receiving coils to receive electromagnetic signals containing position information, and finally using Fourier transform to reconstruct image information . [0003] In magnetic resonance imaging, in order to obtain a higher signal-to-noise ratio, it is necessary to place the coil as close as possible to the imaging area. Therefore, it is very important to correctly select the coils for receiv...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R33/36A61B5/055
CPCA61B5/055G01R33/3621
Inventor 蒋先旺伍亚军
Owner SHANGHAI NEUSOFT MEDICAL TECH LTD
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