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. Author manuscript; available in PMC: 2010 Jul 1.
Published in final edited form as: J Urol. 2009 May 17;182(1):203–209. doi: 10.1016/j.juro.2009.02.129

Figure 3.

Figure 3

Single axial urethral section demonstrates 3 layers observed and how SUS measures were calculated using equations, SUS thickness = outer - inner diameter, SUS area = outer - inner area = 3.14 [(OD/2)2 - (ID/2)2] and length/area index = SUS length× SUS area.