Abstract
The work presents experimental measurements of electron beam transverse flux density distribution. Experimental data is recorded during the multiple beam scanning in different directions with the particular angle step by the thin scintillation strip. The intensity of the light generated in the scintillator is proportional to the intensity of the radiation going through the strip. Generated photons is guided by the optical fiber to the photomultiplier and registered by the analyzer. The result of the work is the experimental data demonstrated dependence of the radiation intensity on detecting strip position and angle orientation. This dependence is transformed to the radiation intensity dependence on the coordinates in the beam transverse plane using special mathematical processing.
Highlights
Modern technology for oncology treatment causes high demands on the dose delivery accuracy especially accounting improvements in external beam radiation therapy
The control of radiation beam parameters is provided in medical practice to international protocols for clinical dosimetry [2, 3]
The method to measure electron beam transverse flux density distribution is based on multi-angle measurements
Summary
Modern technology for oncology treatment causes high demands on the dose delivery accuracy especially accounting improvements in external beam radiation therapy. It is necessary to control spatial parameters of the radiation beams before radiation therapy sessions and during ones to provide accuracy of dose delivering and avoid of overexposure of the healthy tissue and insufficient dose values in the tumors [1]. It is possible to measure beam spatial parameters using matrix detectors consisted of ionization chambers [4,5,6] or diodes [7, 8], that is placed on the plane or inside special phantoms. Beam parameters measuring with these devices provides high speed. These approaches are invasive and usually the beam is completely absorbed during the measurement. The arrangement of detecting elements allows estimation only the shape and size of the radiation field but not the exactly intensity distribution
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
