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Echographic Visualization of Lesions of the Living Intact Human Breast^*

J. J. Wild and John M. Reid

( Department of Electrical Engineering, University of Minnesota, and St. Barnabas Hospital, Minneapolis, Minn.)

A study is reported of the examination of lesions of the living, intact, human breast using a pulsed ultrasonic reflection technic. Terminology is based on the word "echo," e.g., Echograph, Echogram, and Echoscope.

Two of many possible ways of revealing the final output of the echograph to human perception are described: uni-dimensional echography, comparable to a needle biopsy, and two-dimensional echography, or pictorial visualization of tissues in a plane. The relationship of the two methods is described.

Examples are given of both types of echogram taken from current clinical studies. The results of uni-dimensional studies up to the time of preparation of the report are given, to show how the echograph can diagnose the histological nature of lesions.

The position of this study in the approach to mass examination at suspected cancer sites, such as the breast, thyroid, upper and lower gastrointestinal tract, cervix, and prostate, is discussed.

What is believed to be the first actual visualization of a cancer within the nipple was achieved (Figs. 9, 10).

^* This investigation was supported by a research grant from the National Cancer Institute, Department of Health, Education, and Welfare, U.S. Public Health Service.

Dr. Wild and Mr. Reid are presently Director and Chief Electronic Engineer, respectively, of the Medico-Technological Research Department of St. Barnabas Hospital, Minneapolis, Minn.

Received 10/ 5/53.