Magnetic resonance positioning scanning method and device

Abstract

The invention discloses a magnetic resonance positioning scanning method and device. The method comprises the following steps of moving an electric-control scanning bed so as to enable a scanning part to be aligned to the central area of a magnet after a target is in position; starting magnetic resonance positioning scanning, acquiring an echo signal, and rebuilding the echo signal to obtain a vertical plane positioning image and a coronal plane positioning image of the scanning part; extracting outline information of the scanning part of the vertical plane positioning image and the coronal plane positioning image through an image segmentation recognition algorithm, and judging whether a distance between the outline edge of the scanning part and a frame stays in a preset threshold value range or not; and automatically calculating an adjusting distance and an adjusting direction when the distance between the outline edge of the scanning part and the frame does not stay in the preset threshold value range, controlling the electric-control scanning bed to move according to the calculated adjusting distance and the adjusting direction, restarting the magnetic resonance positioning scanning, and displaying a vertical plane positioning image and a coronal plane positioning image, which are rebuilt after the magnetic resonance positioning scanning is restarted.

Description

technical field [0001] The invention belongs to the technical field of magnetic resonance imaging, and in particular relates to a positioning scanning method and device in cranial magnetic resonance imaging. Background technique [0002] Magnetic resonance imaging (MRI for short) refers to the use of corresponding radio frequency pulses to excite the hydrogen nuclei (protons) of the subject placed in a static magnetic field, and the resulting magnetic resonance signals are collected and processed by a computer to reconstruct images. Because magnetic resonance imaging technology has the advantages of no ionizing radiation damage, high soft tissue contrast, high image resolution, flexible selection of imaging parameters and scanning orientation, and the ability to display blood vessels without contrast agents, it is widely used in clinical medical diagnosis. Its application and development The prospects are very bright. [0003] In the prior art, the scan of the brain and oth...

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Problems solved by technology

[0006] In view of the above deficiencies in the prior art, the purpose of the present invention is to provide a method and device for magnetic resonance positioning scanning, aiming to solve the problem of time-consuming, labor-intensive, low efficiency and inability to accurately adjust the position of the hospital bed in the existing magnetic resonance positioning scanning method. question

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