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. Author manuscript; available in PMC: 2022 Feb 1.
Published in final edited form as: Int J Radiat Oncol Biol Phys. 2020 Sep 6;109(2):413–424. doi: 10.1016/j.ijrobp.2020.08.061

Fig. 3.

Fig. 3.

Para-aortic nodal clinical target volume (CTV) on intravenous (IV) contrast scan versus non–contrast scan. The superior para-aortic nodal CTVon (a) an IV contrast scan and (b) non–contrast scan. Inferior para-aortic nodal CTVon (c) an IV contrast scan and (d) a non–contrast scan. Note the difference in IVC distention on the contrast scan that requires a gradual inclusion of the IVC with margin compared with recommended expansions off the nondistended IVC and aorta on the contrast scan.