HIGH FREQUENCY COIL FOR NUCLEAR MAGNETIC RESONANCE IMAGING APPARATUS AND NUCLEAR MAGNETIC RESONANCE IMAGING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a high frequency coil (hereinafter referred to as high frequency coil) for a magnetic resonance apparatus capable of preventing lowering of transmission efficiency and lowering of receiving sensitivity while maintaining the open performance in the so-called open-type MRI apparatus. SOLUTION: This high frequency coil 40 is formed by two circular conductive plates 401, 402, and conductive lines 405 and 406, both ends of which are respectively connected to each one end and other end of the peripheral edge parts of the conductive plates 401 and 402. Capacitor elements 403 and 404 are connected in series to the conductive plates 405 and 406. In the arrangement on the MRI apparatus of the high frequency coil 40, the surfaces of the two circular conductive plates 401 and 402 where the conductive lines 405 and 406 are provided are opposite to each other. Power reversed in phase is supplied to the circular conductive plate 401 provided on the upper part and the circular conductive plate 402 provided on the lower side by a power distributor 409.