Color Doppler study of the venous circulation in the fetal brain and hemodynamic study of the cerebral transverse sinus

Laurichesse‐Delmas, H.; Grimaud, Olivier; Moscoso, G.; Ville, Y.

doi:10.1046/j.1469-0705.1999.13010034.x

Cited by 42 publications

(35 citation statements)

References 10 publications

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“…In general, prenatal evaluation of the fetal brain, including pericerebral space and evaluation of arterial and venous system, is feasible with real-time and color Doppler state-of-the-art ultrasonography [4,5] .…”

Section: Discussionmentioning

confidence: 99%

Fetal Magnetic Resonance Imaging of an Intracranial Venous Thrombosis

Breysem

Witters²,

Spitz³

et al. 2005

Fetal Diagn Ther

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Objective: To describe the magnetic resonance imaging findings of an antenatal intracranial venous thrombosis. Methods: Prenatal ultrasound (US) at 22 weeks’ gestational age (GA) in a 27-year-old patient (G2 P1) revealed a nonspecific avascular echogenic mass above the cerebellum evaluated with MRI at 23 weeks’ GA. Results: With MRI an enlarged occipital pericerebral space with a layered ovoid mass at the torcular herophili was demonstrated and MRI characteristics suggested a subacute cloth. In follow-up, an important enlargement of the mass was noticed on US examinations. After multidisciplinary consult and parental consent, a prostaglandin induction was performed at 25 weeks’ GA. The baby died immediately after birth. Pathology confirmed the diagnosis of a venous thrombosis at the torcular herophili with extension into the superior sagittal sinus. Conclusion: In our case, MRI findings were helpful in diagnosing an intracranial fetal venous thrombosis.

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Section: Discussionmentioning

confidence: 99%

Fetal Magnetic Resonance Imaging of an Intracranial Venous Thrombosis

Breysem

Witters²,

Spitz³

et al. 2005

Fetal Diagn Ther

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“…Recently [26] , the ultrasound-anatomical correlates were established for the venous blood flow in the fetal brain, and the reference values for flow velocity waveforms in the transverse sinus were documented. Power Doppler improves the sensitivity of detection of the presence of flow, when compared with conventional color Doppler velocity imaging.…”

Section: Doppler Flow Studies: Technical Considerations and Measuremementioning

confidence: 99%

“…Laurichesse-Delmas et al [52] used color Doppler to describe the venous circulation in the fetal brain, and the normal blood flow velocity waveform in the transverse sinus. A triphasic waveform could be obtained in the cerebral transverse sinus in 98% of the cases.…”

Section: Venous Cerebral Blood Flowmentioning

confidence: 99%

Fetal Cerebrovascular Circulation: A Review of Prenatal Ultrasound Assessment

Degani¹

2008

Gynecol Obstet Invest

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Antenatal intrauterine cerebrovascular events were found to play an important role in the pathogenesis of perinatal brain damage. Changes in placental vascular resistance, cardiac contractibility, vessel compliance, and blood viscosity alter the normal dynamics of fetal cerebral circulation. The circulatory mechanisms described in animal fetuses also operate in the human fetus. The isthmus of the aorta represents a watershed area reflecting the redistribution of blood during increased peripheral resistance and hypoxia. The fetal cerebrovascular system acts locally within the skull and interacts with the other components of fetal circulation to compensate by redistribution of blood in case of shortage in resources. The introduction of various sonographic techniques and the collection of data from the arterial and venous cerebral circulation have improved our understanding of the regulatory mechanisms involved in fetal cerebral hemodynamic events. Anatomical and physiological considerations of cerebral vasculature in health and disease are relevant in the research of variations in fetal brain blood perfusion. Changes in flow characteristics in fetal cerebral vasculature can be used for clinical decisions. However, caution is advised before applying research data into practice. The clinical utility is well established in situations of fetal compromise such as growth restriction and anemia.

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“…One theory is that the DSM arises from the normal ballooning of the sinuses, which occurs between the 4th and 6th months of fetal gestation [5,[17][18][19]. This ballooning of the sinuses might lead to venous hypertension with secondary development of dural arteriovenous fistula, or these ballooned sinuses might be associated with small accessory shunts of low flow, which aids in the development and maintenance of the DMS [5,6,20].…”

Section: Discussionmentioning

confidence: 99%