Medical Science · Radiology
A superficial tumor at a depth of 2 cm is treated using 6 MV photons and 9 MeV electrons. Which beam provides a higher percent depth dose (PDD) at 2 cm depth?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 19 MeV electrons✓
- 26 MV photons
- 3Both deliver the same dose
- 4Cannot be determined without SSD
Correct answer
9 MeV electrons
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