Artifacts in ultrasound displacement images are reduced by combining
multiple component displacement images. For each component displacement
image first a pre-displacement ultrasound image is generated from a
particular imaging angle. Then a displacement force is applied on the
object at a desired displacement angle via an ultrasound or other
mechanical force. Then a post-displacement ultrasound image is generated
from the same imaging angle. A component displacement image is generated
by correlating the pre-displacement and post-displacement ultrasound
images. The above steps are repeated for at least one other (imaging
angle, displacement angle) pair, and the resulting component displacement
images are combined to reduce displacement image artifacts.