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Fig. 5. —Illustration shows utility of intimomedial rupture finding in
distinguishing true from false lumen in aortic dissection. Top left image
shows longitudinal section of aortic lumen; bottom left image is longitudinal
section of aortic wall in profile; and images on right are transverse
cross-sectional images above (A and B), at (C), and below (D) level of
intimomedial entrance tear. True lumen is depicted in red and false lumen, in
pink. At level of tear (C) direction of blood flow is from true to false lumen
with intimomedial flaps pointing toward false lumen.
