Static field magnet and MRI apparatus

A static field magnet used in an MRI apparatus configured to image an object, the static field magnet comprising:

• at least one loop coil pair including a first loop coil configured to be supplied with an electric current in a first direction, and a second loop coil configured to be supplied with an electric current in a second direction opposite to the first direction, wherein:
• the first loop coil and the second loop coil are arranged in such a manner that a first coil plane and a second coil plane are along a specific direction included in a specific plane without overlapping each other, the first coil plane being a planar area surrounded by a first loop that forms the first loop coil, and the second coil plane being a planar area surrounded by a second loop that forms the second loop coil;
• the loop coil pair is configured to generate a static magnetic field parallel to the specific direction;
• and
• each of the first loop coil and the second loop coil is formed into a shape of a deformed rectangle that has two opposing long sides and two opposing short sides in such a manner that a side of the two opposing long sides is curved toward an inside of the deformed rectangle and an other side of the two opposing long sides is curved toward an inside of the deformed rectangle or is formed as a straight line.