Visualization and Transport of Positron Emission from Proton Activation in vivo

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Science  09 Jun 1978:
Vol. 200, Issue 4346, pp. 1151-1153
DOI: 10.1126/science.200.4346.1151


Heavy charged particle beams can be widely used for cancer therapy if control in heterogeneous tissue is proved practical. A beam of protons at 200 million electron volts has been visualized in plastic and in a living animal by using an on-line positron camera. The fraction of the activity retained in the radiation site was found to be at least 70 percent of that produced in a dead animal. The sensitivity of the technique was established for a typical geometry.