BCRB 2018

Value of γ in some late-reacting tissues

Compared with tumors, γ is usually larger Dose response curves can be steeper, more so when fixed fraction number, i.e. higher dose per fraction

7 6 5 4 3 2 1 0

Fixed number of fractions (22) Fixed dose per fraction

γ 50

Head and neck tumours

Lung, late

Telangiectasia

Telangiectasia

Recto sigmoid

Bentzen (1994) Bentzen and Overgaard (1996)

Subcut. fibrosis

Frozen shoulder

Laryngeal oedema

Michael Joiner

Basic Clinical Radiobiology 2018

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