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Douglas Howry

” a University of Colorado radiologist who, in 1948, concentrated on the development of B-mode equipment that compared cross-sectional anatomy to gross pathology. Howry was one of few radiologists in the field of ultrasound, and he did his work in the basement of his home. “Every field can claim at least one famous basement/garage pioneer,” she said. “Using 2.5 megahertz, he produced a+in 1949.” ” Some other unsung heroes of ultrasound include John Reid and John Wild who, in 1950, built a linear, handheld, B-mode instrument for breast tumors, and Joseph Holmes, who, in 1951, along with Howry and other engineers, produced the first 2D B-mode linear compound scanner. “ https://www.radiologytoday.net/archive/rt_120108p28.shtml ” Working in collaboration with his wife, Dr. Dorothy Howry and two engineers, Roderick Bliss and Gerald Posakony, Howry produced in his basement in 1949 a pulse-echo ultrasonic scanner. “ During 1951, Dr. Joseph Holmes became associated with Howry’s project. ” Howry, Posakony and Bliss had introduced multiposition, or compound, scanning to eliminate “false” echoes and produce better images. This incarnation incorporated an immersion tank system using a cattle-watering tank with the ultrasonic transducer mounted on a wooden rail, The transducer, immersed in the tank with the object under study, moved horizontally along the rail. When this equipment produced improved pictures, the Howry team published their results in 1952. “ ” The images, which they called ‘somagram‘ in their 1952 paper in the Journal of Laboratory and Clinical Medicine were probably the most important and inspiring images that were published as pionneering work on ultrasound imaging. “ http://www.ob-ultrasound.net/howry.html 1951 – “Douglass Howry with the help of Joseph Holmes, an American nephrologist, develops a B-mode linear compound ultrasound scanner to include superior transducers, amplifiers, and display imaging. Howry and his team introduce compound scanning in order to eliminate ‘false’ echoes. Compound scanning allowed Howry to differentiate between structures and tissues which ultimately produced better imaging and were the referred to as ‘sonagrams‘. “

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Philipp Lenard

Dr. Mihran Kassabian

His contributions to radiology included the introduction of a positioning device that accurately displayed the round nature of the ribs on an X-ray image.