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Influence of electron contamination on in vivo surface dosimetry for high-energy photon beams
Umeå University, Faculty of Medicine, Department of Radiation Sciences, Radiation Physics.
Umeå University, Faculty of Medicine, Department of Radiation Sciences, Radiation Physics.
1998 (English)In: Medical physics (Lancaster), ISSN 0094-2405, Vol. 25, no 6, 916-921 p.Article in journal (Refereed) Published
Abstract [en]

The influence of the electron contamination at in vivo dosimetry with diodes on the patient surface has been investigated by introducing different accessories in the beam path and by changing the field size and SSD. The results show a clear correlation between the electron contamination at an effective measuring depth of the diode and the signal from the patient diode. When the electron contamination is taken into account the agreement between the diode values and the absorbed dose is greatly improved. More accurate in vivo dosimetry with less error margins is therefore possible if better predictions of the electron contamination in high-energy photon beams can be performed. (C) 1998 American Association of Physicists in Medicine. [S0094-2405(98)00606-3].

Place, publisher, year, edition, pages
1998. Vol. 25, no 6, 916-921 p.
Identifiers
URN: urn:nbn:se:umu:diva-39948ISI: 000074282600018OAI: oai:DiVA.org:umu-39948DiVA: diva2:396910
Available from: 2011-02-11 Created: 2011-02-11 Last updated: 2017-12-11

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