Image processing apparatus and magnetic resonance imaging apparatus

An image processing apparatus comprising processing circuitry including at least one processor, the processing circuitry being configured to:

• convert time-series k-space data into first time-series x-space data, the x-space representing a spatial position;
• generate a magnitude image from second time-series x-space data, the second time-series x-space data being acquired by applying a first filter to the first time-series x-space data;
• and
• generate a phase image from third time-series x-space data, the third time-series x-space data being acquired by applying, to the first time-series x-space data, a second filter that is different from the first filter,
• wherein
• the first filter and the second filter are filters operating on an f-axis that is different from a t-axis representing a time axis, and
• wherein the processing circuitry being further configured to:
• acquire x-f space data by performing t-f conversion to the first time-series x-space data, the t-f conversion converting the t-axis to the f-axis;
• after applying the first filter on the x-f space data, apply inverse transformation of the t-f conversion, thereby acquiring the second time-series x-space data;
• perform the t-f conversion to the first time-series x-space data, thereby acquiring the x-f space data;
• and
• apply, after applying the second filter on the x-f space data, the inverse transformation of the t-f conversion, thereby generating the third time-series x-space data.

An image processing apparatus comprising processing circuitry including at least one processor, the processing circuitry being configured to:

• convert time-series k-space data into first time-series x-space data, the x-space representing a spatial position;
• generate a magnitude image from second time-series x-space data, the second time-series x-space data being acquired by applying a first filter to the first time-series x-space data;
• and
• generate a phase image from third time-series x-space data, the third time-series x-space data being acquired by applying, to the first time-series x-space data, a second filter that is different from the first filter,
• wherein the first filter and the second filer are data smoothing filters on a time axis, and
• wherein the processing circuitry is further configured to:
• apply the first filter on the first time-series x-space data on the time axis, thereby acquiring the second time-series x-space data;
• and
• apply the second filter on the first time-series x-space data on the time axis, thereby acquiring the third time-series x-space data.

An image processing apparatus comprising processing circuitry including at least one processor, the processing circuitry being configured to:

• convert time-series k-space data into first time-series x-space data, the x-space representing a spatial position;
• generate a magnitude image from second time-series x-space data, the second time-series x-space data being acquired by applying a first filter to the first time-series x-space data;
• and
• generate a phase image from third time-series x-space data, the third time-series x-space data being acquired by applying, to the first time-series x-space data, a second filter that is different from the first filter,
• wherein the first filter is a stronger data smoothing filter than the second filter.

A magnetic resonance imaging apparatus comprising:

• an MRI system to acquire time-series k-space data;
• one or more processor-accessible media comprising processor-executable instructions that, when executed, cause a device to perform actions comprising:
• converting the time-series k-space data acquired by the MRI system into first time-series x-space data, the x-space representing a spatial position;
• generating a magnitude image from second time-series x-space data, the second time-series x-space data being acquired by applying a first filter to the first time-series x-space data;
• and
• generating a phase image from third time-series x-space data, the third time-series x-space data being acquired by applying, to the first time-series x-space data, a second filter that is different from the first filter, wherein the first filter is a stronger data smoothing filter than the second filter is.