author
William D. O'Brien
A pioneer in biomedical acoustics, William D. O’Brien, Jr. helped shape the safer and more informative use of ultrasound in medicine. His research connects electrical engineering, biology, and healthcare, with applications ranging from fetal imaging to cancer research.
1 Audiobook
The "City Guard": A History of Company "B" First Regiment Infantry, N. G. C. During the Sacramento Campaign, July 3 to 26, 1894 Including a Brief History of the Company Since Its Organization March 31, 1854, to July 3, 1894
by California. Infantry. First Regiment. Company B, Irving B. Cook, George Filmer, W. J. Hayes, A. McCulloch, William D. O'Brien
About the author
William D. O’Brien, Jr. is an electrical engineer and ultrasound researcher who became Donald Biggar Willett Professor Emeritus at the University of Illinois Urbana-Champaign. A Chicago native, he earned his bachelor’s, master’s, and doctoral degrees from Illinois in 1966, 1968, and 1970, then spent five years as a research scientist with the U.S. Food and Drug Administration before joining the university faculty in 1975.
His work focuses on how ultrasound interacts with biological tissue, including ultrasound safety, bioeffects, dosimetry, and quantitative imaging. His research has supported advances in medical imaging, tissue characterization, blood-flow measurement, and the study of cancer and fetal health. O’Brien has published hundreds of peer-reviewed papers, mentored generations of researchers, and received major honors from organizations including IEEE, the Acoustical Society of America, and the American Institute of Ultrasound in Medicine.