English: Schematic animation representing the measurement procedure of an ultrasound computer tomography system. Setup is an semi-spherical container lined with many ultrasound transducer arrays with 13 individual transducer elements (denoted as green dots) in a cylindrical housings. The measurement container is filled with water as medium. In the water is positioned centrally a small sphere as simple object, denoted in red. One of the individual transducer elements (denoted with the blue housing) sends out a spherical wave (denoted as semi-transparent blue wave-front). All other individual ultrasound transducers gather data. When the blue wave-front hits the object, the object interacts with the wave and re-emits a secondary wave, denoted as semi-transparent purple wave-front, indicating the carrying of information of the object. After the primary and all secondary waves have run out and are absorbed by the containers wall lining this process is repeated, iteratively for every individual ultrasound transducer element positioned on different spatial and angular positions.