Course book Advanced Treatment Planning 2018
Effect of collimator angle depends on the IMRT delivery
▪ In step&shoot delivery: block the ‘central area’
segment 1
segment x
▪ in d-MLC delivery: leafs should be closed when travelling ‘across’ the central area Elekta MLCi 90º versus Varian / Elekta MLCi2: 0º / 90º or allow for ‘ move only segments ’
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