Magnetic resonance imaging apparatus and image generation method

A magnetic resonance imaging apparatus configured to acquire a plurality of magnetic resonance signals corresponding to a plurality of read-out directions including a first read-out direction and a second read-out direction intersecting the first read-out direction, the magnetic resonance imaging apparatus comprising:

• processing circuitry configured to multiply, by a constant, a frequency determined based on a field of view in scanning performed on a subject in the read-out directions and intensity of a gradient magnetic field in the scanning, thereby setting a cutoff frequency defining a passband for the magnetic resonance signals;
• and
• a low-pass filter configured to filter the magnetic resonance signals acquired by the scanning performed in the read-out directions using the cutoff frequency, wherein
• the processing circuitry generates a magnetic resonance image based on magnetic resonance data generated by A/D conversion performed on the magnetic resonance signals output from the low-pass filter.

An image generation method comprising:

• specifying a signal area relating to generation of magnetic resonance signals in a subject in a plurality of read-out directions including a first read-out direction and a second read-out direction intersecting the first read-out direction;
• setting a cutoff frequency defining a passband for the magnetic resonance signals based on the signal area;
• filtering the magnetic resonance signals acquired by scanning performed on the subject in the read-out directions with a low-pass filter using the cutoff frequency;
• generating magnetic resonance data by A/D conversion performed on the magnetic resonance signals output from the low-pass filter;
• and
• generating a magnetic resonance image based on the magnetic resonance data.