Medical Science · Radiology
Which factor most directly increases the Percentage Depth Dose (PDD) in megavoltage external beam radiation therapy?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Increased patient tissue thickness
- 2Higher radiation beam energy✓
- 3Decreased radiation field size
- 4Shorter Source-to-Skin Distance (SSD)
Correct answer
Higher radiation beam energy
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