Comment by type0

> why is using a radioactive agent here better than using some cytotoxic chemical agent? Seems to me like using some chemical poison would be easier to manufacture and deliver than radiation.

It's a question of dose, you need very small amount of radioactive molecules for it to be effective, cytotoxic drugs need much higher doses and harm healthy tissues even when you try to highly target it to some over-expressed receptors on he cancer cells