[Research on a Portable Shielding-free Ultra-low Field Magnetic Resonance Imaging System]

Overview

Journal Sheng Wu Yi Xue Gong Cheng Xue Za Zhi

Specialty Biomedical Engineering

Date 2023 Oct 25

PMID 37879910

Authors

Yuxiang Zhang

Wei He

Lei Yang

Yucheng He

Jiamin Wu

Zheng Xu

Affiliations

Soon will be listed here.

Abstract

The portable light-weight magnetic resonance imaging system can be deployed in special occasions such as Intensive Care Unit (ICU) and ambulances, making it possible to implement bedside monitoring imaging systems, mobile stroke units and magnetic resonance platforms in remote areas. Compared with medium and high field imaging systems, ultra-low-field magnetic resonance imaging equipment utilizes light-weight permanent magnets, which are compact and easy to move. However, the image quality is highly susceptible to external electromagnetic interference without a shielded room and there are still many key technical problems in hardware design to be solved. In this paper, the system hardware design and environmental electromagnetic interference elimination algorithm were studied. Consequently, some research results were obtained and a prototype of portable shielding-free 50 mT magnetic resonance imaging system was built. The light-weight magnet and its uniformity, coil system and noise elimination algorithm and human brain imaging were verified. Finally, high-quality images of the healthy human brain were obtained. The results of this study would provide reference for the development and application of ultra-low-field magnetic resonance imaging technology.

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