Abstract
Measurements of surface dose and build up have been measured for photon radiation sources with maximum energy from 1.2 to 25 MeV. A variable volume ionization chamber was used and the results extrapolated to what would be obtained with a zero volume chamber. The results are found to depend systematically on the plate separation of a parallel plate ionization chamber and an empirical method was derived for correcting measurements made with a fixed volume chamber. The relationship of dose build up curves with skin reactions in radiation therapy patients is discussed.
Original language | English |
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Pages (from-to) | 14-19 |
Number of pages | 6 |
Journal | Medical physics |
Volume | 2 |
Issue number | 1 |
DOIs | |
State | Published - Jan 1975 |
Keywords
- 48.510
- BIOLOGICAL RADIATION EFFECTS
- BUILDUP
- GAMMA DOSIMETRY
- GAMMA SOURCES
- RADIATION DOSES
- RADIOTHERAPY
- SKIN
- X=(HYPHEN)=RAY DOSIMETRY
- X=(HYPHEN)=RAY SOURCES