The time it takes a patient to receive a dose of 1 Gy is 10 minutes at 50 cm SSD. How long would it take to receive a dose of 2 Gy at 100cm SSD?
Added by Joel H.
Step 1
The dose rate is inversely proportional to the square of the distance from the source, according to the inverse square law. This means that if the distance is doubled, the dose rate is reduced by a factor of four. Show more…
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