Vasa previa evaluated by noncontrast time-of-flight magnetic resonance angiography
نویسندگان
چکیده
منابع مشابه
magnetic resonance angiography in the diagnosis of cerebral arteriovenous malformation and dural arteriovenous fistulas: comparison of time-resolved magnetic resonance angiography and three dimensional time-of-flight magnetic resonance angiography
background traditional digital subtraction angiography (dsa) is currently the gold standard diagnostic method for the diagnosis and evaluation of cerebral arteriovenous malformation (avm) and dural arteriovenous fistulas (davf). objectives the aim of this study was to analyze different less invasive magnetic resonance angiography (mra) images, time-resolved mra (tr-mra) and three-dimensional ti...
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BACKGROUND Different imaging techniques have been used for the investigation of the lymphatic channels and lymph glands. Noncontrast magnetic resonance (MR) lymphography has significant advantages in comparison with other imaging modalities. METHODS Noncontrast MR lymphography uses very heavily T2-weighted fast spin echo sequences which obtain a nearly complete signal loss in tissue backgroun...
متن کاملEvaluation of cerebral vasoreactivity by three-dimensional time-of-flight magnetic resonance angiography.
BACKGROUND AND PURPOSE Cerebral vasoreactivity is an important indicator of the reserve capacity of the cerebral circulation. To make a quantitative analysis of cerebral vasoreactivity in individual major arterial territories, we evaluated the response to acetazolamide using three-dimensional time-of-flight magnetic resonance angiography. METHODS We examined 10 healthy volunteers and 6 patien...
متن کاملTime-of-flight magnetic resonance angiography of the canine brain at 3.0 Tesla and 7.0 Tesla.
OBJECTIVE To evaluate the ability of 2-D time-of-flight (ToF) magnetic resonance angiography (MRA) to depict intracranial vasculature and compare results obtained with 3.0- and 7.0-T scanners in dogs. ANIMALS 5 healthy Beagles. PROCEDURES 2-D ToF-MRA of the intracranial vasculature was obtained for each dog by use of a 3.0-T and a 7.0-T scanner. Quantitative assessment of the images was obt...
متن کاملUltrahigh Field (>7T) Time-of-Flight and Phase Contrast Magnetic Resonance Angiography of the Intracerebral Arteries
Figure 2: MIPs of 1.5T (a) and 7T (b) PC MRA of the vasculature superior to the circle of Willis of a 39 year old, male volunteer. The acquisitions times for both sequences were about 5 minutes. Axial images were acquired with slices thickness of 0.75 mm. The 7T images depict third order branches of the circle of Willis, e.g. the paracentral artery. Ultrahigh Field (>7T) Time-of-Flight and Phas...
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ژورنال
عنوان ژورنال: Taiwanese Journal of Obstetrics and Gynecology
سال: 2016
ISSN: 1028-4559
DOI: 10.1016/j.tjog.2016.06.007