Suppression of internal multiples with a group sparse Radon transform for imaging the interior of bone

We explore the feasibility of using ultrasound to image through bone. The strong velocity and acoustic impedance contrast between bone and soft tissue like that between salt and sediments, significantly reduces the amount of energy transmitted and generates strong internal multiples. In this paper we present a novel framework for imaging the interior of long bones by using a group sparse hyperbolic radon transform to both denoise and despeckle the resulting image and suppress the internal multiples. Using this technique we demonstrate that it is possible to image the interior of bones despite large velocity contrasts and strong multiples on synthetic and invivo data.