Magnetic resonance imaging device

A data acquisition method of acquiring three-dimensional image data by repeating a plurality of times a step comprising selective excitation of a predetermined region of an object to be examined, application of encoding gradient magnetic fields at least in two directions and collection of echo signals emitted from the region while changing the intensities of the gradient magnetic fields,

• wherein sampling points in a measurement space defined by the intensities of the two direction encoding gradient magnetic fields are divided into the first and second groups,
• the first and second groups are measured successively,
• in the measurement, the first group to be measured first is sampled such that the distance from the measurement space origin to a sampling point decreases in a sampling order and the second group to be measured after is sampled such that the distance from the measurement space origin to a sampling point increases in a sampling order.

A data acquisition method of acquiring three-dimensional image data by repeating a plurality of times a step comprising selective excitation of a predetermined region of an object to be examined, application of encoding gradient magnetic fields at least in two directions and collection of echo signals emitted from the region while changing the intensities of the gradient magnetic fields,

• wherein sampling points in a measurement space defined by the intensities of the two direction encoding gradient magnetic fields are divided into two,
• the divided regions are measured successively,
• in the measurement, the first region to be measured first is sampled such that the distance from the measurement space origin to a sampling point decreases in a sampling order and the second region to be measured after is sampled such that the distance from the measurement space origin to a sampling point increases in a sampling order.

A data acquisition method of acquiring three-dimensional image data by repeating a plurality of times a step comprising selective excitation of a predetermined region of an object to be examined, application of encoding gradient magnetic fields at least in two directions and collection of echo signals emitted from the region while changing the intensities of the gradient magnetic fields,

• wherein sampling points in a measurement space defined by the intensities of the two direction encoding gradient magnetic fields are divided into the first and second groups such that the groups share the origin and are in a relation of complex conjugate, and adjacent matrix points belong to different groups,
• the first and second groups are measured successively,
• in the measurement, the first group to be measured first is sampled such that the distance from the measurement space origin to a sampling point decreases in a sampling order and the second group to be measured after is sampled such that the distance from the measurement space origin to a sampling point increases in a sampling order.