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.
Roger Sanders
Dr. Sanders has written over 16 books on Ultrasound & Sonography, including "Clinical Sonography: A Practical Guide", which is now in its fourth edition, and over 150 peer-reviewed articles. He is generally recognized as one of the pioneers of the use of Ultrasound in relation to Obstetrics and Gynecology, and has been recognized for his work with the Biparietal diameter among other work in the field. He is a fellow of several different Societies in the field of Ultrasound, including the Society of Radiology in Ultrasound, the American College of Radiology, and the American Institute of Ultrasound in Medicine (the AIUM), the latter awarding him the Presidential Award in 1984, and the Joseph H. Holmes Pioneer Award in 2001.