Patient's question:
Sure, here is the translation of the content you provided:```
No
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Doctor's answer:
Hello, Iodine-131 radioactive material has a half-life of about 7 to 8 days and exhibits an inverse proportionality to the square of the distance. After the half-life, the longer the time passes, the weaker the effect becomes; at the same time, the farther the distance is maintained, the smaller the power becomes.