Quantitative myocardium magnetic resonance imaging method and device and storage medium

Abstract

The invention provides a quantitative myocardium magnetic resonance imaging method, a quantitative myocardium magnetic resonance imaging device and a storage medium. The method comprises the followingsteps: under the control of an electrocardio gate control signal and a breathing navigation signal, carrying out image signal collecting operation at every other recovery time period; determining a parameter T1 according to the collected image signal and the delay time of saturation pulse corresponding to the collected image signal, and determining a parameter T2 according to the collected imagesignal, the delay time of saturation pulse corresponding to the collected image signal, and the echo time interval of T2 priming pulse; and generating a quantitative myocardium magnetic resonance image according to the parameter T1 and the parameter T2. According to the technical scheme, scanning can be carried out under the condition that a tested person has free breathing, and breath holding isnot needed. Meanwhile, the imaging visual field can be further expanded, and thus the spatial resolution is improved. In addition, through k-space, complete staggered sectional collection among the sampling points is realized, thus the inherent registering of original images is realized, and the additional image processing at the later period is not needed.

Description

technical field [0001] The present invention relates to the field of medical imaging, and more specifically relates to a quantitative myocardial magnetic resonance imaging method, equipment and storage medium. Background technique [0002] Magnetic Resonance Imaging technology uses the phenomenon of nuclear magnetic resonance to image the human body, which is already a common medical imaging examination method. [0003] The basic physical parameter T of NMR 1 (spin-lattice relaxation time, or longitudinal relaxation time) and T 2 (Spin-spin relaxation time, or transverse relaxation time) is a time constant describing the recovery process of the longitudinal magnetization vector and the decay process of the transverse magnetization vector. T 1 and T 2 It is determined by the composition and structure of biological tissue and the strength of the magnetic field. Under a certain magnetic field strength, different tissues have specific T 1 and T 2 value. When biological t...

AI Technical Summary

Problems solved by technology

The breath-hold requirement restricts further improvements in imaging resolution and cannot be used for subjects with difficulty in breath-holding (common in cardiac patients)

In the prior art, scanning acceleration is performed through parallel imaging technology, which sacrifices the signal-to-noise ratio of the signal, and introduces complex down-sampling and reconstruction algorithms

Finally, more T 1 and T 2 Only weighted sampling points can be imaged, so it is sensitive to heart rate changes and has a long scan time

Images