An ideal, targeted radionuclide therapy for cancer is one that places 100 percent of the treatment dose uniformly within the target tumor and margins without the radionuclide out-migrating to normal organs and tissues. Such treatment can be achieved by designing the therapeutic agent with an optimum radionuclide, chemical form, and carrier properties that facilitate direct injection, placement, and complete retention through radiological decay. Here I introduce a radionuclide therapy of solid tumors by direct interstitial injection.
A new gamma-ray sensor using a cadmium sulfide (CdS) photo-resistor has been developed for the purpose of intense radiation source monitoring. In this study, the characteristic of the developed sensor and some applications are discussed.