An Angiographic Study of the Meningorachidian Venous System

Dilenge, D; Perey, Bernard

doi:10.1148/108.2.333

Cited by 65 publications

(23 citation statements)

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“…6 The main cerebral blood outflow routes in this position are the VP and the NV. 6,7,12 Significant interindividual variances in the vessel size and vessel recruitment for the cerebral blood outflow were found. The variability is not surprising because cervical veins show multiple interconnections.…”

Section: Positional Mr Imaging Findings In Healthy Volunteersmentioning

confidence: 97%

“…[2][3][4][5] Different body postures have different patterns of cerebral venous outflow, and a considerable variation of the cerebral venous outflow has been reported. [6][7][8] Methods, like duplex sonography or conventional MR venography, which are routinely used in the clinical setting to evaluate the cerebral venous outflow, have significant drawbacks when trying to evaluate position-dependent changes.…”

mentioning

confidence: 99%

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Positional Venous MR Angiography: An Operator-Independent Tool to Evaluate Cerebral Venous Outflow Hemodynamics

Niggemann

Seifert²,

Förg³

et al. 2011

AJNR Am J Neuroradiol

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Section: Positional Mr Imaging Findings In Healthy Volunteersmentioning

confidence: 97%

mentioning

confidence: 99%

Positional Venous MR Angiography: An Operator-Independent Tool to Evaluate Cerebral Venous Outflow Hemodynamics

Niggemann

Seifert²,

Förg³

et al. 2011

AJNR Am J Neuroradiol

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“…Although initially described as accessory, the secondary venous pathways, namely epidural vein, vertebral vein, and deep cervical vein, are now recognized to represent a significant fraction of the venous cranial drainage, depending on posture (sitting or standing position, in which the jugular veins collapse) or on intrathoracic pressure. [24][25][26] Moreover, a previous PC-MRI study performed on HC has demonstrated that the role of secondary venous pathways may be physiologically variable, independently of posture-related factors. 8 These heterogeneous venous flow patterns observed in MS patients as well as in HC renders difficult to assess 'venous obstructions,' as distinguishing between physiologic side dominance, secondary venous drainage preponderance, or venous obstruction may be challenging in subjects with flow asymmetry.…”

Section: Venous Flowsmentioning

confidence: 99%

Concomitant Analysis of Arterial, Venous, and CSF Flows using Phase-Contrast MRI: A Quantitative Comparison Between MS Patients and Healthy Controls

ElSankari

Balédent

Pesch

et al. 2013

J Cereb Blood Flow Metab

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Venous dysfunction has recently been hypothesized to contribute to the pathophysiology of multiple sclerosis (MS). 2D phasecontrast (PC) magnetic resonance imaging (MRI) is a non-invasive and innocuous technique enabling reliable quantification of cerebrospinal fluid (CSF) and blood flows in the same imaging session. We compared PC-MRI measurements of CSF, arterial and venous flows in MS patients to those from a normative cohort of healthy controls (HC). Nineteen MS patients underwent a standardized MR protocol for cerebral examination on a 3T system including Fast cine PC-MRI sequences with peripheral gating in four acquisition planes. Quantitative data were processed using a homemade software to extract CSF and blood flow regions of interest, animate flows, and calculate cervical and intracranial vascular flow curves during the cardiac cycle (CC). Results were compared with values obtained in 21 HC using multivariate analysis. Venous flow patterns were comparable in both groups without signs of reflux. Arterial flows (P ¼ 0.02) and cervical CSF dynamic oscillations (P ¼ 0.01) were decreased in MS patients. No significant differences in venous cerebral and cervical outflows were observed between groups, thereby contradicting the recently proposed theory of venous insufficiency. Unexpected decrease in arterial perfusion in MS patients warrants further correlation to volumetric measurements of the brain.

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“…Although some authors consider these pathways more or less irrelevant compared to the internal jugular veins, others argue that the vertebral plexuses from the preferred pathway for venous return from the brain in the upright position. 7 Caudally, the vertebral veins may directly join the subclavian or brachiocephalic vein, or they may drain into the internal jugular or deep cervical vein.…”

mentioning

confidence: 99%

Blood Flow Velocities in the Vertebral Veins of Healthy Subjects: A Duplex Sonographic Study

Hoffmann

Weih²,

T³

et al. 1999

Journal of Neuroimaging

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Along with the jugular veins, the vertebral veins serve as an important pathway for venous blood returning from the brain. In this study, the authors report duplex sonographic findings in 138 healthy subjects without central nervous disease. Successful insonation was possible in 70.7% of all examined vessels. Bilateral insonation was achieved in 86 subjects (62.3%). Only 1 vertebral vein was detected in 23 persons (16.7%), whereas no vein was found in 29 persons (21%). The authors observed a marked variation of peak flow velocities ranged (5-81 cm/s, mean +/- standard deviation, 23.9 +/- 12.3 cm/s). No significant gender-related or side-to-side differences or age influences on flow velocities were detected. The authors' findings may be of relevance when discussing flow velocities in the vertebral veins in cases of cerebrovenous disorders (e.g., dural sinus thrombosis) or in patients after neck dissection.

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An Angiographic Study of the Meningorachidian Venous System

Cited by 65 publications

References 0 publications

Positional Venous MR Angiography: An Operator-Independent Tool to Evaluate Cerebral Venous Outflow Hemodynamics

Positional Venous MR Angiography: An Operator-Independent Tool to Evaluate Cerebral Venous Outflow Hemodynamics

Concomitant Analysis of Arterial, Venous, and CSF Flows using Phase-Contrast MRI: A Quantitative Comparison Between MS Patients and Healthy Controls

Blood Flow Velocities in the Vertebral Veins of Healthy Subjects: A Duplex Sonographic Study

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