Patent ID: 8193810

Claim:
An RF coil of a magnetic resonance imaging apparatus comprising: a series resonant circuit comprising a surface loop coil made of a conductor inserted with a first capacitor, an inductor connected in parallel to the series resonant circuit, and a second capacitor connected in parallel to the inductor, wherein a resonance frequency f A of the series resonant circuit is tuned to a frequency of a magnetic resonance signal generated by a test subject, wherein a parallel resonant circuit constituted by the series resonant circuit, the inductor and the second capacitor has a first resonance frequency f B which is lower than the resonance frequency f A of the series resonance circuit and a second resonance frequency f C which is higher than the resonance frequency f A , and wherein a ratio of a first difference between the resonance frequency f A of the series resonance circuit and the first resonance frequency f B , and a second difference between the resonance frequency f A and the second resonance frequency f C , is a ratio from 0.5 to 2.0.