AJNR. American journal of neuroradiology
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It is important to try to clarify the methodology of vertebroplasty such as amount of cement needed, how many needles to use and the significance of cement extravasation. This prospective study evaluated the potential of vertebroplasty to increase the likelihood of an adjacent vertebral compression fracture (VCF) 1 year or less after vertebroplasty, the correlation between the cement volumes injected and pain relief, and the consequences of cement extravasation. ⋯ The incidence of an adjacent VCF 1 year or less after vertebroplasty was comparable with that expected for untreated osteoporotic VCFs. Neither the volume of cement injected nor extravasation of cement into the intravertebral disk affected the likelihood of subsequent adjacent VCFs. Cement volume did not correlate with pain relief.
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AJNR Am J Neuroradiol · Nov 2009
CT angiography source images predict final infarct extent in patients with basilar artery occlusion.
The posterior circulation Acute Stroke Prognosis Early CT Score (pc-ASPECTS) is a 10-point grading system to quantify ischemic changes in the posterior circulation. We analyzed whether pc-ASPECTS on CT angiography (CTA) source images (CTASI) predicted the final infarct extent and hemorrhagic transformation (HT) rate in patients with basilar artery occlusion. ⋯ The extent of hypoattenuation on CTASI predicts the final infarct extent in patients with basilar artery occlusion.
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AJNR Am J Neuroradiol · Nov 2009
Case ReportsSpinal epidural lubricant grease collection mimicking traumatic spinal epidural hematoma.
We report an unusual case of a patient with an epidural fluid collection with signal characteristics mimicking an epidural hematoma. The patient presented with myelopathy caused by thoracic spinal cord compression after a traumatic injury to the chest and back. The injury was caused by high-pressure injection of industrial-grade lubricant grease. This case demonstrates that cord compression can be caused by exogenous material in the setting of trauma that can mimic an acute epidural hematoma.
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AJNR Am J Neuroradiol · Nov 2009
Letter Case ReportsIsolated intracranial Rosai-Dorfman disease in a child.
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AJNR Am J Neuroradiol · Nov 2009
Controlled Clinical TrialImprovement of clinical language localization with an overt semantic and syntactic language functional MR imaging paradigm.
Functional MR imaging (fMRI) is a promising but, in some aspects, still debated noninvasive tool for functional language mapping. We developed a clinical fMRI overt language design at the sentential level to optimize sensitivity for language-related areas of the brain. To evaluate applicability and sensitivity, we investigated a consecutive series of presurgical patients with epilepsy with minimal morphologic brain abnormalities. ⋯ We developed a clinical language fMRI design that integrates various relevant aspects of everyday language demands and provides robust localization of core language areas.