منابع مشابه
Spinal vascular malformations
• Vascular supply of the spinal cord is by anterior spinal artery in the median fissure and 2 posterior spinal arteries supplemented by medullary branches of intervertebral artery. The intervertebral artery gives s dural and medullary branches. The dural branches persist through life, however, the majority of medullary arteries involute and by adult life only 6-10 medullary arteries persist. Th...
متن کاملMR angiography of spinal vascular malformations.
PURPOSE To determine the potential and limitations of MR angiography in the evaluation of spinal vascular malformations. METHODS Eleven consecutive patients with spinal vascular malformations proved with spinal selective arteriography underwent two-dimensional phase-contrast MR angiography. RESULTS Abnormal vessels within the spinal canal were identified with MR angiography in 10 patients. ...
متن کاملVascular malformations and hemangiomas of the canine spinal cord.
An arteriovenous malformation and two hemangiomas in the canine spinal cord were found in three dogs. The malformation was ventral, extramedullary and largely subdural. Chronic hypoxia, consequent upon the shunt, had led to extensive local edema, necrosis and hemorrhage at T13-L1. Prominent intramedullary perivascular fibrosis, mineralization and obliteration were the presumed consequences of t...
متن کاملTime-resolved contrast-enhanced MR angiography of spinal vascular malformations.
BACKGROUND AND PURPOSE The diagnosis of spinal vascular malformations may be challenging on conventional MR imaging because neither the location of the signal abnormality in the spinal cord nor the level of the abnormal flow voids correlates with the level of the fistula. We conducted a retrospective evaluation of the utility of using a time-resolved imaging of contrast kinetics sequence in the...
متن کاملVascular malformations
1. Venous malformations: congenital venous anomalies pathologically characterised by anomalous veins (thickened and hyalinised walls) separated by normal brain. These anatomically abnormal veins drain normal brain tissue. It is thought that they result from intrauterine ischemic event occurring during the formation of medullary veins resulting in collateral venous drainage. This is the most com...
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ژورنال
عنوان ژورنال: Clinical Neuroradiology
سال: 2006
ISSN: 0939-7116,1615-6706
DOI: 10.1007/s00062-006-6026-9