Polymer gel measurement of dose homogeneity in the breast: comparing MLC intensity modulation with standard wedged delivery.
Polymer gel dosimetry has been used to measure the radiotherapy dose homogeneity in a breast phantom for two different treatment methods. The first 'standard' method uses two tangential wedged fields while the second method has three static fields shaped by multileaf collimators (MLCs) in addition to the standard wedged fields to create intensity modulated fields. Gel dose distributions from the multileaf modulation treatment show an improved dose uniformity in comparison to the standard treatment with a decreased volume receiving doses over 105%.
Love
P A
PA
Joint Department of Physics, The Institute of Cancer Research, The Royal Marsden NHS Trust, Sutton, UK.
Evans
P M
PM
Leach
M O
MO
Webb
S
S
D001943:Breast Neoplasms / Q000532:radiotherapy*; D005782:Gels; D006801:Humans; D011108:Polymers; D011874:Radiometry / Q000295:instrumentation* / Q000379:methods*; D011879:Radiotherapy Dosage; D011880:Radiotherapy Planning, Computer-Assisted; D020266:Radiotherapy, Conformal / Q000295:instrumentation* / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
D005782:Gels; D011108:Polymers