A method and device for acquiring magnetic resonance diffusion-weighted imaging and spectral signals

Abstract

The embodiment of the present application discloses a method and a device for acquiring magnetic resonance diffusion weighted imaging signals and spectrum signals. This method takes advantage of the effective time gap between the excitation and acquisition of MR DWS signals, the different spectral frequencies of water molecules and metabolites, and the selective excitation of different frequency materials by binomial pulses. The application of one excitation pulse and two signal acquisition modules can realize joint acquisition of magnetic resonance diffusion weighted imaging signals and spectrum signals in the same signal acquisition sequence. Therefore, the method saves the scanning time of magnetic resonance and improves the scanning efficiency. Moreover, the diffusion-weighted imaging signal and the diffusion-weighted spectrum signal are signals collected after one excitation, and it can be ensured that the two collected signals come from the same body part of the patient. Fully registered to ensure accurate clinical diagnosis.

Description

Technical field [0001] The present application relates to the field of magnetic resonance techniques, and more particularly to a magnetic resonance apex and a collection method and apparatus for a weighted imaging signal and a spectral signal. Background technique [0002] Magnetic resonance imaging, DWI imaging provides organizational comparison of Magnetic RESONANCE IMAGING, DWI images, providing potential, unique information on the survival and development of brain organizations. It is very sensitive to showing acute cerebral infarction and identification with other cerebral acute lesions. At the same time, some lesions such as tumors, infections, trauma and despinement can also provide some information. [0003] Diffusion Weighted Imaging uses the randomness of molecules in the tissue to imaging, is a non-invasive method capable of detecting water molecular diffusion motion in the living tissue, and can provide the functional state characteristics of the human tissue in the m...

AI Technical Summary

Problems solved by technology

This acquisition method is not conducive to improving the MRI scan time

Moreover, the diffusion-weighted imaging signal and the spectral signal obtained by this method of independently collecting the diffusion-weighted imaging signal and the spectral signal are relatively discrete, so that the MRI diffusion-weighted imaging and the spectral signal cannot be completely registered, which brings troubles to clinical diagnosis

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