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The placental-subplacental complex: a specific indicator of placental position on ultrasound

P W Callen, R A Filly

    Journal of Clinical Ultrasound : JCU
    |February 1, 1980
    PubMed

    Subplacental tissue frequently appears as a less echogenic zone adjacent to the more echogenic parenchymal texture of the placenta on gray-scale sonograms. This complex of parenchymal structures is useful in specifically localizing placental position and extent, especially in posteriorly positioned placentas, which may be shadowed by the fetus, or in cases in which focally thickened portions of the myometrium or reverberation artifact may simulate the placenta.

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