A kind of region generating map patient body includes one or more damage, provides an information and/or about the diffusion property level of suspicion malignant tumour in MR. It executes at least one first scanning region and MRI device is set as the first b values, obtain the pixel or voxel value of the first matrix, internal (B1) It executes at least one described region of the second scanning and equipment is arranged to the 2nd b values, obtain the pixel or voxel intensity value of the second matrix, internal (B2) Export monotonic function (inside (B1)/int (B2) that the first calculated value is natural logrithm By obtaining the second calculated value multiplied by the proportional value of each calculated value (B1) inside And generating all second calculating likelihood values of expression is to indicate that one or more damages are pernicious.
