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Properties of the 18-MV photon beam from a dual energy linear accelerator.
- Source :
-
Medical physics [Med Phys] 1987 Nov-Dec; Vol. 14 (6), pp. 1071-8. - Publication Year :
- 1987
-
Abstract
- The beam characteristics of the 18-MV photon beam of a Varian Clinac 1800 are presented. The clinically relevant parameters of central axis depth dose, tissue-phantom ratios, peak-scatter factors, and relative output factors are discussed and compared to 18-MV beam data previously reported. The nominal beam energy was found to be 18.3 +/- 0.8 MV on the central axis. The beam symmetry and uniformity meet the manufacturer's specifications. The inverse-square law is applicable within 1.4% over the clinically useful range of distances and field sizes. An empirical fit equation for the central axis depth dose is presented.
Details
- Language :
- English
- ISSN :
- 0094-2405
- Volume :
- 14
- Issue :
- 6
- Database :
- MEDLINE
- Journal :
- Medical physics
- Publication Type :
- Academic Journal
- Accession number :
- 3696074
- Full Text :
- https://doi.org/10.1118/1.596118