Apparatus for, and method of, processing volumetric medical image data

Apparatus for performing an imaging procedure comprising processing volumetric image data comprising an image processing unit configured to obtain first image data representative of a region including at least one vessel and at least one associated feature, and second image data representative of at least part of the region, an image refinement unit configured to process the first image data and the second image data to produce a combined image representative of the at least one vessel, wherein the associated feature is removed or reduced in intensity in the combined image, and a rendering unit configured to render the combined image as a simulated view that simulates a view obtainable from an alternative imaging procedure.