Acta radiologica
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To evaluate the influence of the amount and distribution of blood on acute ventricular enlargement in subarachnoid hemorrhage (SAH). ⋯ A positive correlation was found between acute hydrocephalus and the amount of subarachnoid and, more importantly, intraventricular blood. This is consistent with the literature and confirms the current pathophysiologic concepts that the acute hydrocephalus following SAH is an obstructive form of hydrocephalus.
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To explore the frequency and patterns of brain infarction and other brain manifestations in cervicocephalic artery dissection (CCAD) and to evaluate the correlation between vessel wall findings and infarctions. ⋯ More than half of CCAD patients have cerebral or cerebellar infarction at CT or conventional MR imaging. Occlusion of the dissected vessel is accompanied by infarction more often than other vessel wall abnormalities. Most cerebral infarctions caused by arterial dissections are of embolic origin. Intracranial dissections cause subarachnoid hemorrhage in more than 20% of patients.
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To investigate the efficacy of diffusion-weighted imaging in patients with Wallenberg's lateral medullary syndrome. ⋯ DWI is a valuable technique for examining patients presenting with the signs and symptoms of Wallenberg's syndrome and high b-value images can provide complementary data to T2-weighted images. However, because most of our case group were in either the acute or subacute stage, true sensitivity of the method in the hyperacute stage of the syndrome remains unclear.
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Comparative Study
Regional variations in the thickness of cervical spine endplates as measured by computed tomography.
To determine regional variations in the thickness of human cervical spine endplates with high spatial resolution. ⋯ Fully automatic assessment of endplate thickness from CT data is feasible. Central regions of the cervical spine endplates are thinner than peripheral parts of the endplates. This distribution is more pronounced in superior than in inferior endplates.
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Ultrasound scanning is replacing scintigraphy in studies of gastric emptying of liquid, but both have considerable day-to-day variability. This study describes a modified ultrasound technique for assessing gastric emptying of liquid, and evaluates the inter- and intraindividual variation in emptying time. ⋯ Ultrasound monitoring of antral size after a liquid meal is a well suited method for assessing gastric emptying of liquid.