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Echographic changes with placental ageing
Author(s) -
Winsberg F.
Publication year - 1973
Publication title -
journal of clinical ultrasound
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.272
H-Index - 61
eISSN - 1097-0096
pISSN - 0091-2751
DOI - 10.1002/jcu.1870010111
Subject(s) - medicine , placenta , ageing , gestation , fetus , anatomy , fetal head , ultrasound , nuclear medicine , pregnancy , radiology , biology , genetics
After 36 weeks gestation the placenta has a distinct echographic appearance which is characterized by rounded transonic areas measuring 1.5 to 4.5 cm. in diameter. Anatomic and histologic study of seven placentas with this echographic appearance has snown no abnormalities or characteristic findings. The recognition of the mature placenta is of clinical use in the determination of dysmaturity and growth retardation, where a single fetal head measurement may be misleading. The changes in the internal consistency of the placenta are most easily identified with a real‐time, water bath, linear scanner (Siemens Vidoson) but may also be seen with a compound contact scanner if non‐storage recording is employed.