High frequency coil unit and magnetic resonance imaging apparatus

A magnetic resonance imaging apparatus comprising:

• a coil, the coil comprising:
• two elliptical ring conductors having an arc at least partially, the two elliptical ring like conductors being arranged in parallel with each other;
• a plurality of linear conductors, both ends of each of the plurality of linear conductors being connected to the elliptical ring conductors, respectively;
• and
• a plurality of capacitors, each of the plurality of capacitors comprising at least one capacitor and each of the plurality of capacitors having a substantially identical capacitance,
• wherein at least one of the plurality of capacitors is arranged one by one on a linear conductor and/or on an arc-shaped conductor, the arc-shaped conductor forming a part of the elliptical ring conductor, and the arc-shaped conductor being placed between connection points of the linear conductors which are adjacent, and
• wherein the plurality of linear conductors are arranged line symmetrically with respect to a major axis and a minor axis of the elliptical ring conductor, and
• wherein a width of each of the plurality of linear conductors increases along with going away from the minor axis toward the major axis of the elliptical ring conductor.

A magnetic resonance imaging apparatus comprising:

• a coil, the coil comprising:
• two elliptical ring conductors having an arc shape at least partially, the two elliptical ring conductors being arranged in parallel with each other;
• a plurality of linear conductors, both ends of each of the plurality of linear conductors being connected to the elliptical ring conductors, respectively;
• and
• a plurality of capacitors, each of the plurality of capacitors comprising at least one capacitor and each of the plurality of capacitors having a substantially identical capacitance,
• wherein at least one of the capacitors is arranged one by one, on the linear conductor and/or on an arc-shaped conductor forming a part of the elliptical ring conductor, the arc-shaped conductor being placed between connection points of the linear conductors, which are adjacent, and
• wherein the plurality of linear conductors are arranged line symmetrically with respect to a major axis and a minor axis of the elliptical ring conductor, and
• wherein an electrical phase difference between two arc-shaped conductors, which are adjacent, increases along with going away from a minor axis toward a major axis of the elliptical ring conductor, and the electrical phase difference is 180 degrees between two of the arc-shaped conductors that are positioned point-symmetrically with respect to the center of the elliptical ring conductor.