A VERSATILE PHANTOM FOR HEMODYNAMIC MEASU REMENTS BY ULTRASOUND DOPPLER FLOW INSTRUMENTS

The test object described comprises a blood simulating liquid pumped t hrough tubes embedded in tissue-mimicking material. The main component s of the system can be realised in different ways. They are largely ex changeable with each other. Water, reticulated foam or silicone rubber is used as bulk background material, blood vessels are simulated usin g latex or silicone tubes or heat-shrink sleeving; in the artificial b lood, sephadex particles or silicone emulsion were used as scatterers. The suspension of scattering particles is driven by a roller pump or a membrane dosage pump. The features of the components are described a nd the applications of the different phantoms discussed.