Richard Stea

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To assess cortical activity during pain perception, regional cerebral blood flow (rCBF) studies were done in humans using single photon emission computed tomography (SPECT) with the radiotracer Tc99m-HMPAO and magnetic resonance imaging localization. Normalized SPECT data were analyzed by region of interest and change distribution. Contralateral(More)
The gate control theory of pain (Melzack and Wall, 1965) suggests that tactile stimuli can decrease the perception of pain. We have found the reverse effect: Heat at levels that induce pain can substantially suppress tactile sensitivity, independently of shifts in attention or arousal. Ten human observers were stimulated by a tonic, pain-producing heat(More)
Optimal management of symptomatic cavernous angiomas (CA) located in the thalamus and the brainstem is problematic. Clinical and radiological (MRI) follow-up series suggest that having hemorrhaged once, recurrent hemorrhage with progressive neurologic dysfunction may commonly occur. We have therefore chosen to treat these lesions when first symptomatic with(More)
Chronic rhinosinusitis (CRS) can lead to serious long-term adverse sequelae, particularly if left untreated. The aim of this study was to describe a series of intracranial mucoceles (ICMs) that arose in the context of longstanding CRS combined with a review of the pertinent literature. A retrospective chart review was performed on all patients who developed(More)
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