MRI t2 image imaging method

Abstract

The invention discloses a nuclear magnetic resonance T2 image imaging method provided by the invention, which includes the following steps: Step 1, setting a pulse sequence, and the pulse sequence adopts a fast spin echo sequence. Step 2: Carry out nuclear magnetic resonance test and collect echo signals in the echo chain; the number of echo signals is required to cover the signal intensities at different time points in the transverse relaxation of the measured substance. Step 3, taking the corresponding signal strengths at different time points as K-space data and performing image reconstruction. Step 4: Obtain the MR signal intensity of each excited voxel in the position space by Fourier transforming the image data in the K space. Step five, calculating the T2 value of each excited voxel. The invention can reduce the scanning time and increase the scanning speed, and is suitable for the inspection of autonomous moving organs.

Description

technical field

[0001] The invention relates to a nuclear magnetic resonance imaging (MRI) method, in particular to a nuclear magnetic resonance transverse relaxation time constant (T2) image imaging method. Background technique

[0002] Nuclear magnetic resonance imaging technology, also known as magnetic resonance imaging, uses the principle of nuclear magnetic resonance to detect the emitted electromagnetic waves through an external gradient magnetic field. Based on this, it can be drawn into an image of the internal structure of the object. has been widely applied. Applying this technique to imaging the internal structures of the human body results in a medical diagnostic tool. The application of rapidly changing gradient magnetic fields has greatly accelerated the speed of nuclear magnetic resonance imaging, making the application of this technology in clinical diagnosis and scientific research a reality, and greatly promoting the rapid development of medicine, neuroph...

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