Dosimetry of large, irregularly shaped fields by the circle method. A feasibility study.
The Circle Method is an algorithm for dose calculation in an irregularly shaped field. The algorithm is based on measurements of circle fields at the therapy machine in use. A separation into primary and scattered radiation components is not necessary. Clarkson's sector-integration method and an off-axis correction are embodied. Experimental and calculated dose values agree within +/- 2.8% in the treatment field and under block shieldings.
Hartmann
A
A
University of Marburg, Germany.
Neidel
O
O
Pfab
R
R
Schmitt
G
G
D000465:Algorithms; D005240:Feasibility Studies; D011874:Radiometry / Q000379:methods*