onr:"swepub:oai:DiVA.org:umu-39942"
Search: onr:"swepub:oai:DiVA.org:umu-39942" > Electron beam colli...
- 1 of 1
- Previous record
- Next record
- To hitlist
Electron beam collimation with focused and curved leaf end MLCs - Experimental verification of Monte Carlo optimized designs
-
- Karlsson, M G (author)
- Umeå universitet,Radiofysik
-
- Karlsson, Mikael (author)
- Umeå universitet,Radiofysik
- (creator_code:org_t)
- 2002-03-25
- 2002
- English.
- In: Medical physics (Lancaster). - : Wiley. - 0094-2405. ; 29:4, s. 631-637
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- In general, electron beams, from conventional accelerators using applicators with lead alloy inserts are not suitable for advanced conformal radiation therapy. However, interesting electron treatments have been demonstrated on a few advanced accelerators. These accelerators have been equipped with helium filled treatment heads and computer controlled MLCs that produce clinically useful energy modulated electron beams or mixed photon electron beams in an automated sequence. This study analyzes the characteristics of different MLC designs, curved and focused leaf ends in helium filled treatment heads, with respect to their effect on electron beams. In addition, this study analyzes the effects that different treatment head designs have on the output factor due to collimator scattering and shielding of secondary sources during treatment. The investigation of the different treatment head designs was performed with the Monte Carlo package BEAM and was verified by experimental methods. The results show that the difference between curved leaf ends and focused ends is negligible in most practical cases. The results also show the importance of scattering foil optimization in the optimization of parameters such as penumbra. virtual source position, and in the reduction of the output variation. In all cases, the experimental data verifies the calculations. (C) 2002 American Association of Physicists in Medicine.
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
- Medical physics (Lancaster) (Search for host publication in LIBRIS)
To the university's database
- 1 of 1
- Previous record
- Next record
- To hitlist
Find more in SwePub
- By the author/editor
- Karlsson, M G
- Karlsson, Mikael
- Articles in the publication
- Medical physics ...
- By the university
- Umeå University
Search outside SwePub
- Extend your search to:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - National Library Systems
- LIBRIS.kb.se
