Medical ultrasound
A contrast medium for medical ultrasonography is a formulation of encapsulated gaseous microbubbles to increase echogenicity of blood, discovered by Dr Raymond Gramiak in 1968 and named contrast-enhanced ultrasound. This contrast medical imaging modality is clinically used throughout the world, in particular for echocardiography in the United States and for ultrasound radiology in Europe and Asia.
Olaf von Ramm
Olaf von Ramm is the Thomas Lord Professor of Engineering at Duke University. He is best known for his work in the development of medical instruments, particularly ultrasound systems. He holds the first patent on a three-dimensional ultrasound .