Journal of neuroimaging : official journal of the American Society of Neuroimaging
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Studies on Whites and Asians have shown contradictory results on the association between an incomplete circle of Willis (CoW) and white matter disease (WMD). We evaluated such relationship in Ecuadorian Mestizos. ⋯ In the Ecuadorian Mestizo population, WMD occurrence and severity do not seem to be related to incompleteness of the CoW.
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Multicenter Study
Usefulness of transcranial Doppler-derived cerebral hemodynamic parameters in the noninvasive assessment of intracranial pressure.
Transcranial Doppler (TCD) ultrasonography is a noninvasive bedside tool that can evaluate cerebral blood flow hemodynamics in major intracranial arteries. TCD-derived pulsatility index (PI) is believed to be influenced by intracranial pressure (ICP). ⋯ TCD-derived PI could be used to identify patients with CSF-P ≥ 20 cm H2 0 and may play an important role as a monitoring tool.
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Head ultrasonography (HUS) remains an important tool in the initial evaluation of intracranial abnormalities in infants. In experienced hands, HUS is an outstanding tool to detect brain abnormalities in preterm and full-term infants, to follow the progression of these lesions, and to describe the maturation of the infant brain. ⋯ In this article we discuss the HUS techniques that are currently available and are now the standard of care, how to perform them, and what to look for. We describe a variety of findings that may be encountered including hemorrhagic complications of prematurity, hypoxic ischemic brain injury, neonatal stroke, infections, malformations, neoplasms, and a few more rare neonatal pathologies.
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Previous studies have demonstrated that cerebral dural sinus stenosis (DSS) may be a potential patho-physiological cause of idiopathic intracranial hypertension (IIH). Endovascular therapy for DSS is emerging as a potential alternative to treat IIH. Here, we present the results of our case series. ⋯ Dural sinus angioplasty and stenting is relatively safe, feasible, and clinically efficacious for patients with symptomatic sinus stenosis who have failed standard therapy. The long-term durability of patency and clinical improvement remains unknown.
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The typical form of mild encephalitis/encephalopathy with a reversible splenial lesion— called MERS type I—is characterized by a singular, reversible lesion in the midline of the splenium. Very rarely, additional lesions with similar signal characteristics can occur in other brain areas, which is then referred to as MERS type II. We present the case of a patient with a reversible splenial lesion and concomitant reversible cerebellar lesions within the scope of an atypical hemolytic uremic syndrome (HUS).