Magnetic resonance imaging apparatus

The magnetic resonance imaging apparatus according to 13, wherein:

• the gradient magnetic field generation means is formed by a gradient magnetic field main coil for generating a main gradient magnetic field in the imaging space, and a gradient magnetic field shielding coil for preventing the magnetic field generated by the gradient magnetic field main coil from leaking to the other side of the imaging space;
• the gradient magnetic field main coil is formed by the inside portion and outside portion with respect to the central axis of the static magnetic field, and the coupling portion for connecting the inside and outside portions;
• and
• the inside portion is imposed more on the outside with respect to the imaging space in opposed directions than the outside portions, and the high-frequency magnetic field generation means is disposed on the imaging space side of the inside portion.

A magnetic resonance imaging apparatus comprising:

• static magnetic field generation means arranged in a vicinity of an imaging space where an examinee is to be located, and generating a static magnetic field in the imaging space;
• gradient magnetic field generation means arranged in the imaging space side of the static magnetic field generation means and generating a gradient magnetic field in the imaging space;
• and
• high-frequency magnetic field generation means arranged at the imaging space side of the gradient magnetic field generation means and generating a high-frequency magnetic field in the imaging space,
• wherein an internal radius of a center portion of the gradient magnetic field generation means is larger than an internal radius of another portion near an end side of the gradient magnetic field generation means, and at least a part of the high-frequency magnetic field generation means is contained in the central portion.