MAGNETIC RESONANCE IMAGING DEVICE AND METHOD

• Main Author: FUHA SADANORI
• Format: Patent
• Language: English; Japanese
• Published: 01.12.2022
• Subjects: DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; MEDICAL OR VETERINARY SCIENCE; PHYSICS; SURGERY; TESTING

To improve sensitivity of a high frequency coil when magnetic field intensity of a static magnetic field spatially changes.SOLUTION: A magnetic resonance imaging device according to an embodiment includes: a static magnetic field magnet, a high frequency coil, and a control unit. The static magnetic field magnet generates a static magnetic field having a magnetic field intensity which changes spatially. The high frequency coil transmits high frequency pulses to an analyte placed in the static magnetic field having the magnetic field intensity which changes spatially, and receives a nuclear-magnetic resonance signal generated by the analyte due to an effect of the high frequency pulses. The control unit controls the high frequency coil to at least receive the nuclear-magnetic resonance signal at each of a plurality of frequencies being adjusted according to a distribution of the static magnetic field.SELECTED DRAWING: Figure 4 【課題】静磁場の磁場強度が空間的に変化する場合に、高周波コイルの感度を向上させること。【解決手段】実施形態に係る磁気共鳴イメージング装置は、静磁場磁石と、高周波コイルと、制御部とを備える。静磁場磁石は、磁場強度が空間的に変化する静磁場を発生させる。高周波コイルは、前記磁場強度が空間的に変化する静磁場内に置かれた被検体に高周波パルスを送信し、当該高周波パルスの影響によって前記被検体から発生する核磁気共鳴信号を受信する。制御部は、少なくとも前記静磁場の分布に応じて調整された複数の周波数それぞれで前記核磁気共鳴信号を受信するように前記高周波コイルを制御する。【選択図】図４