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. Author manuscript; available in PMC: 2016 Apr 1.
Published in final edited form as: Ultrason Imaging. 2014 Aug 12;37(2):101–116. doi: 10.1177/0161734614547281

FIG. 3.

FIG. 3

A representative medium quality B-mode image and its matched HSCI pair. A substantial level of clutter is observed around the walls of the amniotic cavity and within the fetal skull even in the harmonic B-mode, this is noticeable suppressed in the HSCI image. The layered structure of the uterus is also captured. The CNR for the anechoic region at the base of the fetal skull (PF) was measured to be 1.71 in the harmonic B-mode and 3.72 in the HSCI image. The contrast improved from 24.40 dB to 32.24 dB respectively. The ROIs used to calculate the CNR and contrast for the structure are outlined in white.