Isotopes Help in Tumor Discovery

The use of radioactive isotopes and Geiger counters in brain tumor operations has been developed by a group of four Boston scientists including Charles V. Robinson, research associate in Biophysics, and Arthur K. Solomon, assistant professor of Physical Chemistry, both of the Medical School, Massachusetts General Hospital reported yesterday.

The technique consists of using a Geiger counter to locate and outline abnormal tissue in which has been built up a concentration of radioactive phosphorus. A new type of counter the size of a pencil was specially designed for this purpose.

Research on this project began in July, 1947, under Drs. Bertram Selver-stone and William H. Sweet of Massachusetts General Hospital.