Quantitative myocardial magnetic resonance imaging method, equipment and storage medium

Abstract

The invention provides a quantitative myocardial magnetic resonance imaging method, equipment and storage medium. The method includes: performing an image signal acquisition operation under the control of the ECG gating signal and the respiratory navigation signal at intervals of the recovery period; determining the parameter T according to the acquired image signal and the delay time of the corresponding saturation pulse 1 , and according to the acquired image signal and its corresponding saturation pulse delay time and T 2 The echo time interval of the preparation pulse determines the parameter T 2 ;according to the parameter T 1 and the parameter T 2 Generate quantitative myocardial magnetic resonance images. This protocol allows the scan to be completed with the subject breathing freely, without the need for breath-holding. At the same time, it also allows to further expand the imaging field of view and improve the spatial resolution. In addition, segmented acquisitions are fully interleaved between sampling points via k‑space, enabling intrinsic registration of the original image without additional image processing in post.

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

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