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Ultrasonic imaging of the amniotic and chorionic cavities

Revista Interamericana De Radiologia
|January 1, 1979
PubMed

This paper presents two cases illustrating separate chorionic and amniotic sacs at 5 to 6 weeks of estimated gestational age. With higher resolution scanning units and higher-frequency transducers, the delineation of the amniotic membrane can be seen before it fuses with the chorionic membrane; this should not be interpretated as an abnormality.

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