Acoustic radiation force impulse imaging (ARFI) uses ultrasound to create a qualitative 2-D map of tissue stiffness.
It does so by creating a 'push' inside the tissue using the acoustic radiation force from a focused ultrasound beam.
The amount the tissue along the axis of the beam is pushed down is reflective of tissue stiffness; softer tissue is more easily pushed than stiffer tissue.
ARFI shows a qualitative stiffness value along the axis of the pushing beam.
By pushing in many different places, a map of the tissue stiffness is built up.
Acoustic radiation force impulse imaging (ARFI) uses ultrasound to create a qualitative 2-D map of tissue stiffness. It does so by creating a 'push' inside the tissue using the acoustic radiation force from a focused ultrasound beam. The amount the tissue along the axis of the beam is pushed down is reflective of tissue stiffness; softer tissue is more easily pushed than stiffer tissue. ARFI shows a qualitative stiffness value along the axis of the pushing beam. By pushing in many different places, a map of the tissue stiffness is built up.
Elastography