Analysis on magnetic interference and shielding of machine room of superconductive MR / 中国医学装备

ABSTRACT

Objective: To analyze and explore the measurement of magnetic interference and shielding of the installation environment of magnetic resonance (MR) system so as to satisfy the normal operation of MR system. Methods: The external environment and dynamic interference environment before the MR system was installed were evaluated, and the influences of magnetic line of force of central magnetic field (such as magnet) were further analyzed. Results: When the site of machine room of MR system was selected, the magnetic interference and its influence should be considered at the first step, and the shielding measurement should be provided. And the implemented magnetic shielding and measurement of radio shielding should depend on the actual environment so as to take the superconductive MR machine room with the basic condition of operation of MR system. Conclusion: An assessment of magnetic interference and shielding of installation environment of MR system is the key link that ensures installation work of MR system can be smoothly completed.