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Susceptibility-weighted angiography for the detection of high-flow intracranial vascular lesions: preliminary study.

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Title: Susceptibility-weighted angiography for the detection of high-flow intracranial vascular lesions: preliminary study.
Authors: Hodel, Jérôme jeromehodel@hotmail.com, Blanc, Raphaël1, Rodallec, Mathieu2, Guillonnet, Antoine3, Gerber, Sophie3, Pistocchi, Silvia1, Sitta, Rémi4, Rabrait, Cécile5, Zuber, Mathieu6, Pruvo, Jean-Pierre7, Zins, Marc3, Leclerc, Xavier7
Source: European Radiology. Apr2013, Vol. 23 Issue 4, p1122-1130. 9p. 4 Black and White Photographs, 1 Diagram, 2 Charts.
Subjects: Magnetic resonance imaging, Peripheral vascular diseases, Angiography, Medical imaging systems, Vascular diseases, Diagnostic imaging
Abstract: Objectives: Susceptibility-weighted magnetic resonance imaging (MRI) sequences may demonstrate various signal intensities of draining veins in cases of high-flow vascular malformation (HFVM), including arteriovenous malformation (AVM) and dural arteriovenous fistula (dAVF). Our objective was to evaluate susceptibility-weighted angiography (SWAN) for the detection of HFVM. Methods: Fifty-eight consecutive patients with a suspected intracranial vascular malformation were explored with SWAN and post-contrast MRI sequences at 3 T. The diagnosis of slow-flow vascular malformation (SFVM), including developmental venous anomaly (DVA) or brain capillary telangiectasia (BCT), was based on MRI. Patients with suspected HFVM underwent digital subtraction angiography (DSA). SWAN images were analysed by three blinded readers according to a three-point scale of the venous signal. Results: Thirty-one patients presented 35 SFVM (26 DVA and 9 BCT) that systematically appeared hypointense on SWAN images. In patients with atypical MRI findings, DSA revealed one patient with an atypical DVA and 26 patients with HFVM (22 AVM and 4 dAVF). SWAN revealed at least one venous hyperintensity in all patients with HFVM. Agreement between readers was excellent. Conclusions: SWAN appears reliable for characterising blood flow dynamics in brain veins. In clinical practice, SWAN can routinely rule out HFVM in patients with atypical brain veins. Key Points: • Susceptibility- weighted angiography (SWAN) offers new perspectives for detecting intracranial vascular malformations. • SWAN sequence provides non- invasive characterisation of blood flow dynamics. • SWAN can differentiate between high and slow flowing venous blood. • SWAN can routinely rule out high- flow vascular malformations. [ABSTRACT FROM AUTHOR]
Copyright of European Radiology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: <searchLink fieldCode="AR" term="%22Hodel%2C+Jérôme%22">Hodel, Jérôme</searchLink><i> jeromehodel@hotmail.com</i><br /><searchLink fieldCode="AR" term="%22Blanc%2C+Raphaël%22">Blanc, Raphaël</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Rodallec%2C+Mathieu%22">Rodallec, Mathieu</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Guillonnet%2C+Antoine%22">Guillonnet, Antoine</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Gerber%2C+Sophie%22">Gerber, Sophie</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Pistocchi%2C+Silvia%22">Pistocchi, Silvia</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Sitta%2C+Rémi%22">Sitta, Rémi</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Rabrait%2C+Cécile%22">Rabrait, Cécile</searchLink><relatesTo>5</relatesTo><br /><searchLink fieldCode="AR" term="%22Zuber%2C+Mathieu%22">Zuber, Mathieu</searchLink><relatesTo>6</relatesTo><br /><searchLink fieldCode="AR" term="%22Pruvo%2C+Jean-Pierre%22">Pruvo, Jean-Pierre</searchLink><relatesTo>7</relatesTo><br /><searchLink fieldCode="AR" term="%22Zins%2C+Marc%22">Zins, Marc</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Leclerc%2C+Xavier%22">Leclerc, Xavier</searchLink><relatesTo>7</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22European+Radiology%22">European Radiology</searchLink>. Apr2013, Vol. 23 Issue 4, p1122-1130. 9p. 4 Black and White Photographs, 1 Diagram, 2 Charts.
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  Data: <searchLink fieldCode="DE" term="%22Magnetic+resonance+imaging%22">Magnetic resonance imaging</searchLink><br /><searchLink fieldCode="DE" term="%22Peripheral+vascular+diseases%22">Peripheral vascular diseases</searchLink><br /><searchLink fieldCode="DE" term="%22Angiography%22">Angiography</searchLink><br /><searchLink fieldCode="DE" term="%22Medical+imaging+systems%22">Medical imaging systems</searchLink><br /><searchLink fieldCode="DE" term="%22Vascular+diseases%22">Vascular diseases</searchLink><br /><searchLink fieldCode="DE" term="%22Diagnostic+imaging%22">Diagnostic imaging</searchLink>
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  Data: Objectives: Susceptibility-weighted magnetic resonance imaging (MRI) sequences may demonstrate various signal intensities of draining veins in cases of high-flow vascular malformation (HFVM), including arteriovenous malformation (AVM) and dural arteriovenous fistula (dAVF). Our objective was to evaluate susceptibility-weighted angiography (SWAN) for the detection of HFVM. Methods: Fifty-eight consecutive patients with a suspected intracranial vascular malformation were explored with SWAN and post-contrast MRI sequences at 3 T. The diagnosis of slow-flow vascular malformation (SFVM), including developmental venous anomaly (DVA) or brain capillary telangiectasia (BCT), was based on MRI. Patients with suspected HFVM underwent digital subtraction angiography (DSA). SWAN images were analysed by three blinded readers according to a three-point scale of the venous signal. Results: Thirty-one patients presented 35 SFVM (26 DVA and 9 BCT) that systematically appeared hypointense on SWAN images. In patients with atypical MRI findings, DSA revealed one patient with an atypical DVA and 26 patients with HFVM (22 AVM and 4 dAVF). SWAN revealed at least one venous hyperintensity in all patients with HFVM. Agreement between readers was excellent. Conclusions: SWAN appears reliable for characterising blood flow dynamics in brain veins. In clinical practice, SWAN can routinely rule out HFVM in patients with atypical brain veins. Key Points: • Susceptibility- weighted angiography (SWAN) offers new perspectives for detecting intracranial vascular malformations. • SWAN sequence provides non- invasive characterisation of blood flow dynamics. • SWAN can differentiate between high and slow flowing venous blood. • SWAN can routinely rule out high- flow vascular malformations. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of European Radiology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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