2021/06/25 by Danai Soulioti, Soulioti, Danai Eleni, Francisco Santibáñez +3
Medicine · Engineering · #Ultrasound Imaging and Elastography #Photoacoustic and Ultrasonic Imaging #Ultrasound and Hyperthermia Applications
paper · pdf · doi:10.48550/arxiv.2106.13890
Ultrasound image degradation in the human body is complex and occurs due to\nthe distortion of the wave as it propagates to and from the target. Here, we\nestablish a simulation based framework that deconstructs the sources of image\ndegradation into a separable parameter space that includes phase aberration\nfrom speed variation, multiple reverberations, and trailing reverberation.\nThese separable parameters are then used to reconstruct images with known and\nindependently modulable amounts of degradation using methods that depend on the\nadditive or multiplicative nature of the degradation. Experimental measurements\nand Fullwave simulations in the human abdomen demonstrate this calibrated\nprocess in abdominal imaging by matching relevant imaging metrics such as phase\naberration, reverberation strength, speckle brightness and coherence length.\nApplications of the reconstruction technique are illustrated for beamforming\nstrategies (phase aberration correction, spatial coherence imaging), in a\nstandard abdominal environment, as well as in impedance ranges much higher than\nthose naturally occurring in the body.\n