Spina bifida: 3D ultrasound diagnosis at 11-13 weeks

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This training video clip illustrates the role of 3D neurosonography in the diagnosis of open spina bifida (meningomyelocele) at 11-13 weeks of pregnancy.
Intracranial translucency (IT) is the term proposed to describe the 4th ventricle of the fetal brain in midsagittal plane. Recently it has shown that absence of IT is associated with open spina bifida. The detection of IT has been proposed as a screening method for neural tube defects.
In the cases of abnormal (absent) IT the diagnosis of open spina bifida can be confirmed by visualization of fetal brain abnormality. In fetuses with meningomyelocele at 11-13 weeks the intracranial collection of CSF is substantially reduced with a decrease in the area of the lateral ventricles and diameters of the third ventricle, aqueduct of Sylvius and fourth ventricle. This phenomenon is detectable by 3D neurosonography performed by transvaginal ultrasound.
The brain of the 11-13 weeks fetus affected by spina bifida can be described as 'dried-up brain'. The sonographic features of 'dried-up brain' can include:
Irregular shape of the lateral ventricles
'Expanded' choroid plexuses
Collapsed 3rd ventricle
Caudal and posterior displacement of the mesencephalon: CRASH SIGN
Narrow aqueduct
Not visible cerebellum
Obliterated 4th ventricle
The data presented in this ultrasound video clip are based on publication: Loureiro T et al. Cerebral ventricular system in fetuses with open spina bifida at 11-13 weeks' gestation. Ultrasound Obstet Gynecol. 2012; 39:620-4.
To learn more about 3D neurosonography please watch our previous training videos:
• 3D scan of the fetal b...
• Fetal brain at 12 week...

[@user-jj8hh7vc6d]

The best informative video on CNS abnormalities in first trimester. Many thanks for you r offer!!

[@pankajbhatt4205]

This is a very informative video for new gynecologists who are under training.Thanks

[@WERIS007]

GREAT VIDEO ! THANKS A LOT !

[@ishaphutela9078]

Very nice video

[@phuongytb]

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[@kr-ql3fz]

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[@sp7kommera]

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[@nhuvohoquynh6356]

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[@ratnashankerbasa8010]

Nice video. Good scope for new learners. Please keep posting more. Thanks.

[@fousi.mfousi.m6765]

Lateral ventricle size 9.4mm is it normal at21 week