How much theraputic strength does a cesium-131

Reference no: EM13177072

Cesium-131 is a short lived radioisotope (t1/2= 9.7 days) used to treat prostate cancer. How much theraputic strength does a Cesium-131 source lose over 60 days? Express your answer as a percent of the strength the source had at the begining of the first day.

Reference no: EM13177072

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