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Magnetic resonance image uniformity correction method and device

A technology of magnetic resonance image and correction method, which is applied in the field of medical imaging and can solve the problems of image calibration, insufficient uniformity of sensitivity, and low uniformity of patient images.

Active Publication Date: 2018-05-11
GENERAL ELECTRIC CO
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Problems solved by technology

[0003] With the rapid development of magnetic resonance imaging technology, the sensitivity of the body coil used in the magnetic resonance imaging system may not be uniform due to changes in its size or other parameters, resulting in inaccurate sensitivity distribution of the surface coil. Continue to use the sensitivity distribution of the surface coil to calibrate the image acquired by the imaging scan, otherwise, the uniformity of the obtained patient image is low

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  • Magnetic resonance image uniformity correction method and device
  • Magnetic resonance image uniformity correction method and device
  • Magnetic resonance image uniformity correction method and device

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[0017] Specific implementations of the present invention will be described below. It should be noted that in the process of specific descriptions of these implementations, for the sake of concise description, it is impossible for this specification to describe all the features of the actual implementations in detail. It should be understood that, in the actual implementation process of any embodiment, just like in the process of any engineering project or design project, in order to achieve the developer's specific goals and to meet system-related or business-related constraints, Often a variety of specific decisions are made, and this can vary from one implementation to another. In addition, it will be appreciated that while such development efforts may be complex and lengthy, the technology disclosed in this disclosure will be Some design, manufacturing or production changes based on the content are just conventional technical means, and should not be interpreted as insuffic...

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Abstract

The invention provides a magnetic resonance image uniformity correction method and a correction device. The method comprises the following steps: acquiring a first uniformity-enhanced image via a phase array uniformity enhancing method; and dividing the first uniformity-enhanced image by a receiving sensitivity distribution value of a body coil in magnetic resonance imaging equipment, so that a second uniformity-enhanced image is obtained. The method can further comprise a step of dividing the second uniformity-enhanced image by a spatial signal distribution value, which is caused by field-intensity distribution of an emitting radio-frequency field, so that a third uniformity-enhanced image is obtained.

Description

technical field [0001] The invention relates to the field of medical imaging, in particular to a method and device for correcting the uniformity of a magnetic resonance image. Background technique [0002] In the current magnetic resonance imaging technology, before the imaging scan of the patient, the sensitivity distribution of the surface coil can be obtained through a calibration scan (pre-scan), so that the sensitivity distribution can be used to enhance the image uniformity, which can be used during imaging. Get a more uniform image after scanning. Generally, it is considered that the sensitivity of the body coil in the magnetic resonance image uniformity correction device is uniformly distributed. Therefore, in the calibration scan, the body coil image and the surface coil image can be obtained respectively under a specific imaging pulse sequence, and the zero-degree sensitivity distribution of the surface coil can be obtained according to the body coil image, the su...

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Application Information

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IPC IPC(8): A61B5/055G06T5/50
CPCA61B5/055G06T5/50G01R33/3415G01R33/5659G01R33/34046Y02E30/10G01R33/36G01R33/56
Inventor 赖永传X·赵章炜炜斯蒂芬·约瑟夫·加尼叶聂莉莎路鹏飞汪洪彬
Owner GENERAL ELECTRIC CO
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