Frank Ellis OBE (22 August 1905 – 3 February 2006)[1] was a world leader[according to whom?]
He subsequently worked as a radiation oncologist at Weston Park Hospital, Sheffield.
After retiring in 1970, he held visiting professorial appointments at the University of Southern California, in Wisconsin and at the Memorial Sloane-Kettering Institute in New York.
[3] In the 2000 New Year Honours, he was made an Officer of the Order of the British Empire (OBE) for services to the development of Radiology.
[3][2] The Frank Ellis Medal of the Royal College of Radiologists is awarded in his honour[5] and a lecture in his name was held five times 2005–2015.