Two-Dimensional Ultrasound Evaluation of the Fetal Cerebral Aqueduct: Improving the Antenatal Diagnosis and Counseling of Aqueductal Stenosis
| Autor: | Pilar Ruiz, F. Correa, F. Viñals, Francisco A. Guerra, Bienvenido Puerto, Gabriel Quiroz, Daniel Martínez |
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| Rok vydání: | 2017 |
| Předmět: |
Embryology
medicine.medical_specialty Lumen (anatomy) Prenatal diagnosis Ultrasonography Prenatal 03 medical and health sciences Median plane 0302 clinical medicine Pregnancy otorhinolaryngologic diseases Humans Medicine Radiology Nuclear Medicine and imaging 030219 obstetrics & reproductive medicine business.industry Cerebral Aqueduct Obstetrics and Gynecology Gestational age General Medicine medicine.disease Sagittal plane Cross-Sectional Studies medicine.anatomical_structure Aqueductal stenosis Cerebral aqueduct Pediatrics Perinatology and Child Health Female sense organs Radiology business 030217 neurology & neurosurgery Hydrocephalus Ventriculomegaly |
| Zdroj: | Fetal Diagnosis and Therapy. 42:278-284 |
| ISSN: | 1421-9964 1015-3837 |
| Popis: | Objective: To describe a technique for the visualization and measurement of cerebral aqueduct diameter through a 2D sagittal median plane, and to report its aspect and measurement in fetuses with aqueductal stenosis (AS). Methods: This was a cross-sectional study of 207 morphologically normal fetuses in low-risk pregnancies between 20 and 36 weeks of gestation. The cerebral aqueduct was visualized transvaginally in a midsagittal plane, and measurements of its greatest diameter (ampulla) were taken independently by an expert and a nonexpert sonographer. In addition, the aqueduct morphology from 7 fetuses with AS and complete follow-up were compared to the reference range. Results: Aqueductal measurements were obtained in 206 of 207 normal fetuses. Aqueductal growth occurred linearly with gestational age. Our method demonstrated excellent interobserver reproducibility. Among the 7 fetuses with AS, the aqueductal lumen could not be identified in 6 and had a funneling aspect in 1. Discussion: Our study demonstrated that it is possible to visualize and measure the cerebral aqueduct directly through a 2D ultrasound median plane. In fetuses with severe ventriculomegaly, the morphology and width of this structure could represent a relevant tool in improving AS diagnosis, differentiating it from other causes of significant ventricular dilation that carry a different outcome. |
| Databáze: | OpenAIRE |
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