Peter Maron Joseph, GM’78, a professor emeritus of radiology in the Perelman School of Medicine, died on February 25. He was 83.

Dr. Joseph received a PhD from Harvard in 1967, as well as a degree from Penn’s School of Medicine in 1978. In 1983, he joined Penn’s faculty as an associate professor of radiologic physics and was promoted to a full professor three years later. Dr. Joseph conducted innovative research at Penn that focused on breast cancer; he received a University Research Foundation (URF) award in 1994. This work gained him recognition in his field. He was a member of the Institute of Electrical and Electronics Engineers and the American Association of Physicists in Medicine. He joined Penn’s 25-Year Club in 2008 and retired in 2013 after 30 years of service.

Dr. Joseph leaves behind fond memories of his time at Penn. “I did an MRI postdoctoral fellowship under Peter’s guidance at Penn from 1987-1989,” said his student Andrew Bogdan. “He was a very hands-on researcher and a great source of knowledge. I greatly enjoyed those two years getting to know and work with him.”

He is survived by his wife, Susan Rittenhouse Joseph; his brother-in-law, Robert Weil; his niece, Nadine Weil; numerous cousins; and the Rittenhouse family. A memorial service was held on April 1. In lieu of flowers, contributions may be made to either Bryn Mawr Presbyterian Church or the Philadelphia Orchestra.