How is photon head scatter in a linear accelerator related to the concept of a virtual source?

The determination of phantom and collimator scatter components of the output of megavoltage photon beams: measurement of the collimator scatter part with a beam-coaxial narrow cylindrical phantom

1991 • 116 citations

The Extension of the Concept of Tissue-Air Ratios (TAR) to High-Energy X-Ray Beams

1970 • 81 citations

Application of the convolution method for calculation of output factors for therapy photon beams

1992 • 78 citations

Head scatter data for several linear accelerators (4-18 MV)

1986 • 75 citations

Output factor constituents of a high‐energy photon beam

1988 • 60 citations

Characteristics of an 18 MV photon beam from a Therac 20 Medical Linear Accelerator

1981 • 41 citations

Head‐scatter factors and effective x‐ray source positions in a 25‐MV linear accelerator

1992 • 35 citations

Separation of primary and scatter components of measured photon beam data

1989 • 21 citations