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. Author manuscript; available in PMC: 2013 Oct 1.
Published in final edited form as: Neurogastroenterol Motil. 2012 Jul 6;24(10):e467–e475. doi: 10.1111/j.1365-2982.2012.01962.x

Figure 2. MRI images at rest, during squeeze, and evacuation in a healthy subject.

Figure 2

Anorectal motion was assessed manually (i.e., by measuring anorectal angles, panels A-C) and by the semi-automated program (panels D-F). Panel E depicts the anorectal motion vector, which connects the anorectal junction at rest and squeeze (white arrow). This vector is decomposed into the puborectalis (white dotted line) and pelvic floor (white solid line) components. Panel F depicts the anorectal motion vector from rest to evacuation (white arrow) and its vector components. Also observe that the pubococcygeal angle decreased from 11° at rest to 8° during squeeze (panels D-E).