The Study of Dosimetric Characteristics of the XHA600D Medical Linear Accelerator Based on a Monte Carlo Code

Figure 4

(a) The influence of the radial intensity distribution of incident electrons on PDDs for 4 × 4, 10 × 10, 30 × 30 cm² fields. (b) The influence of radial intensity distribution of incident electron on OARs for 4 × 4, 10 × 10, 30 × 30 cm² fields at 10 cm depth. The red curve represents the dose curve when the radial intensity FWHM is 0.1 cm, the green curve represents the dose curve when the radial intensity FWHM is 0.4 cm, and the black curve represents the measured dose curve.

(a)

(b)