Unilateral magnetic resonance imaging three-dimensional imaging magnet system

Abstract

The invention belongs to the technical field of magnetic resonance imaging detection, and relates to a unilateral magnetic resonance imaging three-dimensional imaging magnet system being mainly composed of four parts: a permanent magnetic mechanism, a gradient module, a field sweeping module and a radio frequency module; the permanent magnetic mechanism is used for generating a static main magnetic field that has constant gradient in a vertical direction and is relatively uniform in a horizontal plane thin layer; the gradient module is used for coding and positioning a horizontal plane space;the field sweeping module is used for achieving switching and layer selection in the vertical direction under the condition of fixed resonant frequency; the radio frequency module comprises a radio frequency coil and a radio frequency shield, the radio frequency coil is used for generating a radio frequency excitation magnetic field orthogonal to the static main magnetic field and receiving a magnetic resonant signal, and the radio frequency shield is used for eliminating coupling affect between the radio frequency coil and the gradient coil. The system is simple in structure, small in volume,light in weight and free of invasive detection, can achieve unilateral magnetic resonance imaging three-dimensional imaging, has important guiding significance to diagnose skin burn depth and recovery degree, and also provides guidance for shallow imaging of the other articles.

Description

technical field [0001] The invention belongs to the technical field of nuclear magnetic resonance detection, and relates to a single-sided nuclear magnetic resonance three-dimensional imaging magnet system. Background technique [0002] In recent years, unilateral nuclear magnetic resonance technology has been widely used in food analysis and quality control, material science, geophysics and other fields. The permanent magnet is used to provide the main magnetic field, which is low in price and low in energy consumption. In addition, it can provide many information given by traditional nuclear magnetic resonance, including relaxation time T1, T2 imaging, diffusion coefficient D, and even chemical shift. The corresponding imaging system configured with a unilateral magnet has wide application prospects for shallow imaging. [0003] At present, there is a lack of an accurate and fast equipment to judge the burn depth and recovery degree of burn patients in clinical practice, ...

AI Technical Summary

Problems solved by technology

[0003] At present, there is a lack of an accurate and fast equipment to judge the burn depth and recovery degree of burn patients in clinical practice, so as to accurately formulate treatment plans, mainly through the subjective judgment of doctors and the personal experience of patients. This method is relatively rough and subjective.

Images