A medical image processing apparatus comprises processing circuitry configured to: acquire at least one first data set representative of measurements using a medical scanner and including a representation of at least one blood vessel; acquire a plurality of second data sets representative of measurements obtained using the medical scanner and including a representation of said at least one blood vessel, each of the plurality of second data sets representing measurements obtained for a respective different one of a plurality of cardiac phases; and process the plurality of second data sets using a motion estimation procedure to correct for motion between the cardiac phases and, using the at least one first data set, to at least partially remove at least one feature associated with the blood vessel.