Endoluminal catheter-assisted transcervical US of the human embryo. Work in progress

To enhance visualization of anatomic structures of the human embryo, the authors used a commercially available catheter-based ultrasound (US) transducer (12.5 MHz) introduced through the cervix and into the endometrial cavity of seven women about to undergo voluntary termination of first-trimester p...

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Bibliographic Details
Published inRadiology Vol. 181; no. 3; p. 779
Main Authors Ragavendra, N, McMahon, J T, Perrella, R R, Tessler, F N, Hansen, G C, Kimme-Smith, C, Grant, E G, Crandall, B F
Format Journal Article
LanguageEnglish
Published United States 01.12.1991
Subjects
Catheterization
Cervix Uteri
Embryo, Mammalian - diagnostic imaging
Female
Fetal Heart - diagnostic imaging
Gestational Age
Humans
Pregnancy
Ultrasonography, Prenatal - methods
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Summary:To enhance visualization of anatomic structures of the human embryo, the authors used a commercially available catheter-based ultrasound (US) transducer (12.5 MHz) introduced through the cervix and into the endometrial cavity of seven women about to undergo voluntary termination of first-trimester pregnancy. The authors term this technique endoluminal catheter-assisted transcervical (ELCAT) sonography. In none of the patients did the US catheter rupture the fluid-filled chorionic/amniotic cavity. The duration of pregnancy ranged from 5.2 to 10.0 menstrual weeks. The most prominent anatomic structures visualized were the heart and neural tube. As an investigational technique, ELCAT US can be used to image anatomic structures of the developing human embryo.
ISSN:0033-8419
DOI:10.1148/radiology.181.3.1947097