Figure 8
Half step-scan irradiation modality. (a) Scan of the exposed radiochromic film; average dose profiles were evaluated in the horizontal and vertical ROIs indicated by the two rectangles in white. (b) Vertical profile, and (c) horizontal profile of the dose distribution to the skin. In (b) the measured dose profile (thick line) is compared with the profile (in light gray) derived from summing the three line profiles each measured from a single scan, after successive 3 mm shifts of the position of the incident beam. The insets show the position of the film on the surface of the cylindrical phantom. |