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. Author manuscript; available in PMC: 2012 Mar 18.
Published in final edited form as: Ultrason Imaging. 2008 Jul;30(3):151–168. doi: 10.1177/016173460803000302

FIG. 5.

FIG. 5

Images and con tour plots of the fetal phantom in the absence and presence of a clutter-producing layer. (a) Fundamental B-mode image of the fetal phantom. Simultaneously-acquired (b) fundamental and (c) harmonic images with clutter-producing layer placed between the transducer and phantom. The ROIs inside and to the right of the ventricles were used for the contrast calculations de scribed in the text. Accompanying con tour plots: (d) fundamental image in the absence of clutter, (e) fundamental image in the presence of clutter-producing layer and (f) harmonic image in the presence of clutter-producing layer. Note the differences in color scales.