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. Author manuscript; available in PMC: 2015 Oct 1.
Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2014 Oct;61(10):1651–1660. doi: 10.1109/tuffc.2014.006360

Fig. 2.

Fig. 2

B-mode image of half of a bivalved cervix sample. The endocervical canal is located at the top, the distal end is on the left and proximal end/uterus is on the right. The bright line on the bottom is the SoAb rubber interface. The solid lines mark the distal end (external os) and the dashed lines the proximal end (internal os). These locations were verified by HF (the Maternal Fetal Medicine subspecialist co-author). Measurements were made between these endpoints.