Diffusion sensitizing imaging method and MRI apparatus

A method for producing a diffusion sensitized image by use of a pulse sequence with IVIM scheme applied thereto, comprising the steps of:

• applying an RF pulse to a diagnostic portion and applying motion probing gradients for diffusion sensitization of an arbitrary gradient axis;
• collecting MR data at a center of k-space for a section of an approximate echo center;
• collecting MR data sequentially along spiral trajectories which extend in a spiral form from said center of said k-space to an end of said k-space for a section after said approximate echo center;
• and
• modifying a phase of said MR data based on a phase of said MR data at said center of said k-space.

An apparatus for producing a diffusion sensitized image by use of a pulse sequence with an IVIM scheme applied thereto, comprising:

• means for applying an RF pulse to a diagnostic portion and applying motion probing gradients for diffusion sensitization of an arbitrary gradient axis;
• spiral scanning means for collecting MR data at a center of k-space for a section of an approximate echo center and for collecting MR data sequentially along spiral trajectories which extend in a spiral form from said center of said k-space to an end of said k-space for a section after said approximate echo center;
• and
• phase modification means for modifying a phase of said MR data based on a phase of said MR data at said center of said k-space.