An imaging apparatus for an object in change includes an MRI system having a first channel which produces images of the object using alternate lines of k-space applied along each of the two phase encoding directions and a computer which combines the individual images into a composite 3D image. The MRI system acquires alternate lines of temporally resolved data along each phase encoding direction. A method for imaging an object in change includes producing an individual image of the object with a first channel of an MRI system using alternate lines of k-space applied for each phase encoding direction, producing an individual image of the object with at least a second channel of the MRI system by acquiring alternate lines of temporally resolved data using alternate lines of k-space, and combining the individual images into a composite 3D image of the object with a computer of the MRI system.
