Walach, E Local tissue attenuation images based on pulsed-echo ultrasound scans. [electronic resource] - IEEE transactions on bio-medical engineering Feb 1989 - 211-21 p. digital Publication Type: Journal Article ISSN: 0018-9294 Standard No.: 10.1109/10.16468 doi Subjects--Topical Terms: AlgorithmsHumansImage Enhancement--methodsLiver--pathologyModels, StructuralUltrasonography--methods