HIGH FREQUENCY MAGNETIC FIELD GENERATING CIRCUIT AND MAGNETIC RESONANCE DEVICE

摘要

PROBLEM TO BE SOLVED: To reduce a current flowing in a transmission coil when receiving an MR signal by a reception coil after transmitting a RF pulse to a subject P by the transmission coil and to improve the reception efficiency of the MR signal. SOLUTION: A coil 22 for resonating a transmission circuit having impedance causing a resonance state is provided in parallel with a switch 21 connected with the transmission coil 3A. When the switch 21 is turned off, impedance is made high.