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.
D. Jackson Coleman
His interest in physics led him to develop new ultrasound technologies for examining and treating the eye. Together with William Konig and Louis Katz, he created the first commercially available B-scan ultrasound equipment. His numerous patents include those for an ultrasonically vibrated surgical knife, an ultrasonic diagnostic and therapeutic transducer assembly (with methodology), a system of therapeutic ultrasound and real-time ultrasonic scanning, and an ultrasound system for corneal biometry. His pioneering surgical techniques include the first vitreo-retinal surgery in New York and, using the ultrasound that he developed, demonstrating that operating at an earlier stage in ocular trauma could vastly improve the patient's prognosis for recovery. He has specialized in vitreo-retinal surgery and has had a career-long interest in imaging research. With a generous gift from Charles and Margaret Dyson, He established the Margaret M. Dyson Vision Research Institute, one of the major retinal research programs in the world. The Dyson Institute continues research on the causes and possible therapies for age related macular degeneration and ultrasound imaging of the retina and choroid.