TY - JOUR
T1 - A three-Gaussian fit of phantom scatter correction data
AU - Van Gasteren, J. J M
AU - Van der Laarse, R.
AU - Venselaar, J. L M
AU - Heukelom, S.
AU - Jager, H. N.
AU - Van Kleffens, H. J.
AU - Westermann, C. F.
PY - 1998/3/31
Y1 - 1998/3/31
N2 - The phantom scatter correction factor S(p), of megavoltage photon beams can be accurately described using a three-Gaussian fit. The model leads to six parameters, with which S(p),(r) is described as a smooth function of the field radius r for beam qualities in the range from 60Co up to 25 MV. The parameters allow S(p), values to be calculated at intermediate beam energies and for any field shape. Calculated S(p)(X, Y) values for rectangular fields (X, Y) can be subsequently used as reference values to compare with measured S(p),(X, Y) values, for example when appraising a new beam.
AB - The phantom scatter correction factor S(p), of megavoltage photon beams can be accurately described using a three-Gaussian fit. The model leads to six parameters, with which S(p),(r) is described as a smooth function of the field radius r for beam qualities in the range from 60Co up to 25 MV. The parameters allow S(p), values to be calculated at intermediate beam energies and for any field shape. Calculated S(p)(X, Y) values for rectangular fields (X, Y) can be subsequently used as reference values to compare with measured S(p),(X, Y) values, for example when appraising a new beam.
UR - http://www.scopus.com/inward/record.url?scp=0031905806&partnerID=8YFLogxK
U2 - https://doi.org/10.1088/0031-9155/43/3/009
DO - https://doi.org/10.1088/0031-9155/43/3/009
M3 - Article
C2 - 9533136
SN - 0031-9155
VL - 43
SP - 577
EP - 585
JO - Physics in medicine and biology
JF - Physics in medicine and biology
IS - 3
ER -