Abstract
Acoustic radiation force impulse (ARFI) imaging uses high-energy, focused acoustic pulses and conventional diagnostic sonography methods to measure tissue elasticity. Using a modified sonography transducer, a series of high-intensity pushing beams and low PRF tracking beams is transmitted, measuring the magnitude of tissue displacement in response to the applied force. The response to this force can determine the tissue's state of health. Currently, magnetic resonance imaging, computed tomography, and B-mode sonography are considered gold standards for soft tissue imaging. This article presents how ARFI compares to B-mode sonography and reviews the current literature.
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