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Beyond what dose is the cerebral system shows signs of failure?

(a) 25 – 200 rad

(b) 200 – 600 rad

(c) 600 – 1000 rad

(d) > 1000 rad

The question was asked during an internship interview.

This question is from Diathermy, Measurement of Radiation, Dose and its Calculations in chapter Radiation Therapy of Clinical Science

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The correct choice is (d) > 1000 rad

To explain I would say: Various studies show that more mature a cell, higher is its resistance to radiations. Nerve cells and muscle cells show high resistance to radioactivity. Nerve cells once generated, they stay for a long period of time. Thus, they are highly mature cells and so provide high resistance to the radioactivity.

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