AJNR. American journal of neuroradiology
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AJNR Am J Neuroradiol · Nov 2005
Comparative StudyMR imaging findings of intracranial dural arteriovenous fistulas: relations with venous drainage patterns.
Venous drainage patterns are a major determinant of clinical outcome in intracranial dural arteriovenous fistula (DAVF) patients. In this study, we sought to identify MR imaging finding differences between DAVF types classified on the basis of venous drainage patterns. ⋯ MR imaging demonstration of leptomeningeal or medullary vascular dilation and enhancements may be associated with features that are considered predictors of a poor outcome and indicates a need for urgent therapy in intracranial dural AVF patients. MRA is a complementary tool for the identification of dural AVF with venous flow-related enhancement.
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AJNR Am J Neuroradiol · Nov 2005
Endovascular recanalization of internal carotid artery occlusion in acute ischemic stroke.
Endovascular therapy (ET) of internal carotid artery (ICA) stenosis is equivalent to carotid endarterectomy for stroke prevention; however, patients with ICA occlusion and acute symptoms are traditionally not candidates for ET. We report our experience in endovascular recanalization of acute stroke patients with ICA occlusion. ⋯ Endovascular therapy of carotid occlusion in hyperacute stroke patients is feasible and may help to reduce stroke volume and increase good outcome in some patients.
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AJNR Am J Neuroradiol · Nov 2005
Comparative StudyLate rebleeding of ruptured intracranial aneurysms treated with detachable coils.
The purpose of this study was to assess the incidence of late rebleeding of ruptured intracranial aneurysms treated with detachable coils. ⋯ The late rebleeding rate after coiling of ruptured cerebral aneurysms is very low. Follow-up of patients with a coiled aneurysm is mandatory to identify aneurysms that need additional treatment after reopening.
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AJNR Am J Neuroradiol · Nov 2005
Comparative StudyEvaluation of the upper airway cross-sectional area changes in different degrees of severity of obstructive sleep apnea syndrome: cephalometric and dynamic CT study.
The upper airway lumen is narrower in patients with obstructive sleep apnea syndrome (OSAS) than normal subjects. In this study, we examined changes of the upper airway cross-sectional area in each phase of respiration in different degrees of severity of OSAS with dynamic CT and investigated whether these changes have any correlation with sleep apnea severity parameters, including polysomnography (PSG) and cephalometry. ⋯ Patients with severe OSAS had significant differences in the parameters. Measurement of the cross-sectional area of oropharynx in expiration can especially be useful for diagnosis of severe OSAS as a new key point.
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AJNR Am J Neuroradiol · Nov 2005
Case ReportsEpidural blood patch at C2: diagnosis and treatment of spontaneous intracranial hypotension.
Spontaneous intracranial hypotension in a 37-year-old man with intractable headaches was diagnosed on MR imaging. A generous CSF leak was identified at C2 on CT myelography. Successful treatment was performed with CT-guided blood patch at the leakage site after the patient had failed 2 lumbar blood patches. Imaging-guided precise placement of the blood patch is safe and recommended when a lumbar blood patch away from the leakage site could be ineffective.