Related Experiment Video
Updated: Sep 8, 2026

Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies
Published on: February 6, 2019
Influence of electron contamination on in vivo surface dosimetry for high-energy photon beams
1Radiation Physics Department, Umeå University, Sweden.
Abstract:
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.
Related Concept Videos
Biological Effects of Radiation
Scanning Electron Microscopy
Fundamental Principles
Accelerated...

