Magnetic resonance imaging apparatus and image correction estimating method

A magnetic resonance imaging apparatus comprising:

• an imaging condition setting unit configured to set mutually different image conditions;
• a receiving unit configured to receive magnetic resonance signals from an imaging area according to the image conditions;
• an image reconstructing unit configured to reconstruct a plurality of image data corresponding to the image conditions respectively based on the magnetic resonance signals;
• an image distortion correcting unit configured to correct distortions of the plurality of the image data based on a magnetic field distribution on the imaging area;
• and
• an image correction estimating unit configured to estimate whether a correction of at least one of the plurality of the image data is appropriate based on a plurality of corrected image data;
• wherein the image correction estimating unit is configured to obtain a cross-correlation coefficient between the plurality of the corrected image data to estimate whether the correction of at least the one of the plurality of the image data is appropriate based on the cross-correlation coefficient.

A magnetic resonance imaging apparatus comprising:

• an imaging condition setting unit configured to set mutually different image conditions;
• a receiving unit configured to receive magnetic resonance signals from an imaging area according to the image conditions;
• an image reconstructing unit configured to reconstruct a plurality of image data corresponding to the image conditions respectively based on the magnetic resonance signals;
• an image distortion correcting unit configured to correct distortions of the plurality of the image data based on a magnetic field distribution on the imaging area;
• and
• an image correction estimating unit configured to estimate whether a correction of at least one of the plurality of the image data is appropriate based on a plurality of corrected image data;
• wherein the image correction estimating unit is configured to estimate whether the correction of at least the one of the plurality of the image data is appropriate by comparing one signal intensity of the plurality of the corrected image data with another every pixel.

An image correction estimating method comprising steps of:

• setting mutually different image conditions;
• receiving magnetic resonance signals from an imaging area according to the image conditions;
• reconstructing a plurality of image data corresponding to the image conditions respectively based on the magnetic resonance signals;
• correcting distortions of the plurality of the image data based on a magnetic field distribution on the imaging area;
• and
• estimating whether a correction of at least one of the plurality of the image data is appropriate based on a plurality of corrected image data;
• wherein imaging conditions of which polarities of gradient magnetic field in at least one of a phase encode direction, a read out direction and a slice encode direction are mutually reversed are set.

An image correction estimating method comprising steps of:

• setting mutually different image conditions;
• receiving magnetic resonance signals from an imaging area according to the image conditions;
• reconstructing a plurality of image data corresponding to the image conditions respectively based on the magnetic resonance signals;
• correcting distortions of the plurality of the image data based on a magnetic field distribution on the imaging area;
• and
• estimating whether a correction of at least one of the plurality of the image data is appropriate based on a plurality of corrected image data;
• wherein a cross-correlation coefficient between the plurality of the corrected image data is obtained to estimate whether the correction of at least the one of the plurality of the image data is appropriate based on the cross-correlation coefficient.

An image correction estimating method comprising steps of:

• setting mutually different image conditions;
• receiving magnetic resonance signals from an imaging area according to the image conditions;
• reconstructing a plurality of image data corresponding to the image conditions respectively based on the magnetic resonance signals;
• correcting distortions of the plurality of the image data based on a magnetic field distribution on the imaging area;
• and
• estimating whether a correction of at least one of the plurality of the image data is appropriate based on a plurality of corrected image data;
• wherein whether the correction of at least the one of the plurality of the image data is appropriate is estimated by comparing one signal intensity of the plurality of the corrected image data with another every pixel.