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Just down the hall from imaging, the angio suite was a blur of rapid, routine movement: staff members draping a sheet over the patient to leave her groin exposed; essential personnel strapping on lead vests to protect against the X-ray radiation; everyone else withdrawing to a windowed control room to observe.

Survivors include two stepsons, Carl D’Angio of Rochester, N.Y., and Peter D’Angio of Covington, Ky.; two grandchildren; and four great-grandchildren.

Dr. Evans moved to Boston in 1953, landing a position in Farber’s inpatient ward, where she met D’Angio, a radiation oncologist known as “Dan.”

At Farber’s request, Dr. Evans and Giulio D’Angio, a colleague who later became her husband, co-wrote a 1959 study on the effects of radiation and a chemical antibiotic in children with a type of kidney cancer.

She is survived by her stepsons, Carl and Peter D’Angio, and several step-grandchildren and step- great-grandchildren.