The monitor units (MU) of the FFF beam plans (mean 1027.87 ± 128.13 and 1141.22 ± 159.30 for the 6FFF and 10FFF plans, respectively) were higher than the FF beam plans (mean 803.14 ± 103.09 and 737.88 ± 71.34 for the 6MV and 10MV plans, respectively), but the beam-on time was shorter.