Fig. 6

Dose-volume indices of planned dose (black diamond), non-adapted fractional dose (red dots), and adapted fractional dose (green dots) for constrictor, larynx, and bilateral parotid. A reference line is placed at constraint level for each OAR. Note that the figure does not present the dose-volume indices for some patients when the dose was too low (< 1 Gy) or when the parotid or larynx was the primary target