Differences between the measured and calculated Sc values for MLC-defined square field sizes ranging from 4×4 cm2 to the fixed jaw opening size
|Jaw-defined field size (cm2)||DSMa||DSM+MLCb (this work)||P-value|
|Mean (%)||Maximum (%)||Mean (%)||Maximum (%)|
Sc, head scatter factor; MLC, multi-leaf collimator; DSM, dual-source model.
aDeveloped by Jiang et al. .
bDSM in conjunction with MLC scatter source developed in this study.