Assessment of the corpus callosum at 20-24 weeks' gestation by three-dimensional ultrasound examination.
Τίτλος | Assessment of the corpus callosum at 20-24 weeks' gestation by three-dimensional ultrasound examination. |
Publication Type | Journal Article |
Year of Publication | 2007 |
Authors | Plasencia, W., Dagklis T., Borenstein M., Csapo B., & Nicolaides K. H. |
Journal | Ultrasound Obstet Gynecol |
Volume | 30 |
Issue | 2 |
Pagination | 169-72 |
Date Published | 2007 Aug |
ISSN | 0960-7692 |
Λέξεις κλειδιά | Corpus Callosum, Echoencephalography, Female, Humans, Image Processing, Computer-Assisted, Imaging, Three-Dimensional, Pregnancy, Pregnancy Trimester, Second, Prospective Studies, Ultrasonography, Prenatal |
Abstract | OBJECTIVES: To determine the range of positions of the fetal head in which a three-dimensional (3D) volume is acquired for subsequent successful imaging of the corpus callosum.METHODS: We used 3D volumes of the fetal head obtained from singleton pregnancies at 20 to 23 + 6 weeks' gestation. The volumes, which had been acquired with the head in different positions, were then reconstructed with the objective of obtaining a mid-sagittal section of the brain to demonstrate the presence of the corpus callosum.RESULTS: In the reconstructed mid-sagittal sections it was possible to demonstrate the corpus callosum in at least 90% of cases when the 3D volume acquisition plane was (1) mid-sagittal with the angle between the transducer and the direction of the fetal nose ranging from 0 degrees to 179 degrees and from 330 degrees to 359 degrees , (2) oblique around the crown-rump axis with an angle from the mid-sagittal plane of less than 30 degrees , (3) oblique around the anteroposterior axis from the axial plane at the level of the biparietal diameter to the mid-sagittal plane or (4) axial at the level of the biparietal diameter with an angle between the transducer and the midline echo of the brain of 60-119 degrees . In the mid-sagittal sections either the translucent corpus callosum or a comma-shaped echogenic structure was seen depending on whether the plane of volume acquisition was sagittal or axial.CONCLUSIONS: In 3D ultrasound examination the extent to which the corpus callosum can be demonstrated to be present is entirely dependent on the plane of volume acquisition. |
DOI | 10.1002/uog.4035 |
Alternate Journal | Ultrasound Obstet Gynecol |
PubMed ID | 17487942 |