Skip to main content
Figure 2 | Radiation Oncology

Figure 2

From: A 4D IMRT planning method using deformable image registration to improve normal tissue sparing with contemporary delivery techniques

Figure 2

A phantom with tumor volume (shadow area) moving only in superior-inferior direction was illustrated to show how the non-uniform dose distribution was derived. The moving circle was divided into 4 phases (a), (b), (c), (d). The non-uniform prescribed dose distribution derived by the t4Dplan method was shown on (e) and its corresponding 4D dose was shown on (f) by summing the dose for 4 phases evaluated on (b). The prescribed dose for ITV approach (g) and the 4D dose (f). The non-uniform dose distribution acquired for t4Dplan with the total variation regulation from formula (5) was shown in (i) and its corresponding 4D dose (j).

Back to article page

Radiation Oncology

ISSN: 1748-717X

Contact us