

A registered diagnostic medical sonographer (RDMS), medical writer, and editor, Leonard was a highly respected pioneer and educator in the field of diagnostic medical sonography. Early in his career, he worked with the Clayton Foundation for Research, St. Luke's Episcopal Hospital, and the Texas Heart Institute in Houston, contributing significantly to clinical echocardiography and cardiovascular research publications.
Throughout his distinguished career, he held numerous leadership positions, including Director of Education at Cardio-Diagnostic Services Inc., Executive Editor at American Medical Video, Managing Editor at Futura Publishing Company, and Senior Medical Writer at Medsite Inc. and American Medical Communications. Most recently, he served as an Editor III in Correctional Managed Care at the University of Texas Medical Branch - Galveston (UTMB).
Leonard served his country as a Hospital Corpsman in the US Navy and Naval Reserve. He was also an Eagle Scout, achieving the highest rank in the Boy Scouts of America—a distinction earned by only 2% to 4% of all scouts. He attended St. Joseph's Catholic School, the University of Houston, and the University of North Texas.
He was preceded in death by his wife, Patricia. He is survived by his daughter, Alisa Thayer; his grandchildren, Blake and Amber; four great-grandchildren; his brother, David, and wife, Gayle; his niece, Brooke her husband, James, and their children, Hud and Stella.
In remembrance, memorial donations may be made to the Wounded Warrior Project or the Star of Hope Mission Houston.
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