Steps | Methods |
---|---|
1 | Contour the inferior vena cava and aorta |
2 | The superior extent should be the at the L1/L2 space |
3 | The inferior extent should be the level of the bifurcation of the aorta. |
4 | Expand the aorta by a margin of 10 mm anteriorly, posteriorly and medially, and 15 mm laterally. |
5 | Expand the inferior vena cava by 8 mm anteriorly and medially, and 6 mm posteriorly and laterally. |
6 | Combine the aorta and inferior vena cava expansions to create a clinical target volume. |
7 | Crop the clinical target volume form normal boundaries such as the vertebral body, muscle and bowl and expand the posterior border to the anterior vertebral body. |