Physics Bucharest 2017

Helical Tomotherapy - treatment planning

Input parameters

• w: 1.0, 2,5, 5.0 cm (frequently commissioned) • p: 0.2-0.5 (typically used values) • 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

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fractionation determine T • couch velocity, v= (p∙w)/T