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. Author manuscript; available in PMC: 2010 Jul 1.
Published in final edited form as: Med Dosim. 2008 Sep 4;34(2):133–139. doi: 10.1016/j.meddos.2008.07.003

Figure 1.

Figure 1

Schema of Mountain and Dresler classification system [19]. Station 3A is anterior to Stations 1–2R and L and Stations 4R and L (blue arrow). Station 3P is posterior to trachea. Station 6 is anterior and lateral to aortic arch and ascending aorta (purple arrow).