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Contact Therapy (Papillon)
- Jean Papillon (Lyon)
- 50 kV maximal energy X-ray beam
- Focal distance of 4 cm
- Applicator diameter of 20-30 mm
- Direct visual control
- Outpatient basis
- Output: 20 Gy/min
- Percentage depth dose:
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100% at surface
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44% at 5 mm
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10% at 20 mm
Gerard et al. Clin Oncol (R Coll Radiol) 2007;19(9):661–73.