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Input parameters
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w: 1.0, 2,5, 5.0 cm (frequently commissioned)
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p: 0.2-0.5 (typically used values)
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maximum MF: 1.5-3.5 (typically used values)
•
blocking of selected OAR (beamlet weight=0)
Output
•
leaf opening times per projection and
rotation for total dose
•
maximum leaf opening time and
fractionation determine T
•
couch velocity, v= (p∙w)/T
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Helical Tomotherapy - treatment planning