Magnetic resonance imaging apparatus, magnetic field adjustment implement for magnetic resonance imaging apparatus, magnetic resonance imaging method, and method of adjusting magnetic field for magnetic resonance imaging apparatus

A magnetic resonance imaging apparatus comprising:

• an imaging unit configured to perform a magnetic resonance imaging by forming a static magnetic field with a magnet and acquiring magnetic resonance signals from an object sent by a bed into an acquisition region of the magnetic resonance signals formed in the magnet;
• and
• a magnetic field adjustment unit configured to improve a uniformity of the static magnetic field formed under an influence of a circumstance in a shield room in which the magnet is placed, the magnetic field adjustment being placed outside the magnet.

A method of adjusting a magnetic field for a magnetic resonance imaging apparatus comprising:

• arranging a magnetic field adjustment unit outside a magnet of the magnetic resonance imaging apparatus;
• and
• improving a uniformity of a static magnetic field by the magnetic field adjustment unit, the static magnetic field being formed by the magnet, the static magnetic field being formed under an influence of a circumstance in a shield room in which the magnet is placed.

A magnetic resonance imaging method comprising:

• performing a magnetic resonance imaging by forming a static magnetic field with a magnet and acquiring magnetic resonance signals from an object sent by a bed into an acquisition region of the magnetic resonance signals formed in the magnet;
• and
• arranging a magnetic field adjustment unit outside the magnet and improving a uniformity of the static magnetic field by the magnetic field adjustment unit, the static magnetic field being formed by the magnet, the static magnetic field being formed under an influence of a circumstance in a shield room in which the magnet is placed.