Skip to main content
Go back

Doctor Operating a Teletherapy Device, date unknown

Black and white photograph of a machine in the foreground and a man in a lab coat behind it. The machine is suspended and resembles a small cylindrical cannon.

Bibliothèque et Archives nationales du Québec, date unknown

In radio-oncology, teletherapy is sometimes referred to as external radiotherapy. It consists in the projection of rapid targeted radiation to destroy cancerous tissues from the outside. This photograph shows one of the machines used for this type of treatment.