By Zoran Rumboldt et al. (eds.)
So much imaging books are ordered in response to underlying etiology. even though, in genuine lifestyles scientific perform, radiologists often make their differential diagnoses in keeping with the picture styles, because the etiology is frequently unknown. mind Imaging with CT and MRI provides over a hundred and eighty sickness procedures and basic editions, grouping entities by way of those easy styles to intensify differential diagnostic good points. prime quality CT and MRI scans exhibit a number of commonplace and distinguishing pictures for every entity. universal and strange scientific situations are defined, together with dilated perivascular areas, capillary teleangiectasia, Susac's syndrome and desmoplastic childish ganglioglioma. either uncomplicated and complex imaging recommendations are used, reflecting the truth of medical perform. This image-focused booklet emphasises the main pertinent scientific info suitable to the diagnostic strategy. Trainee and working towards radiologists will locate mind Imaging with CT and MRI a useful and clinically appropriate device for studying and educating.
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Additional info for Brain Imaging with MRI and CT: An Image Pattern Approach
Sechi G, Serra A. Wernicke’s encephalopathy: new clinical settings and recent advances in diagnosis and management. Lancet Neurol 2007;6:442–55. 29 Brain Imaging with MRI and CT, ed. Zoran Rumboldt et al. Published by Cambridge University Press. © Cambridge University Press 2012. SECTION 1 A Bilateral Predominantly Symmetric Abnormalities B C Figure 1. Axial FLAIR image at the level of the centrum semiovale (A) shows bilateral patchy high signal intensity (arrows) in the white matter corresponding to the locations of the corticospinal tracts (CST).
Without appropriate antifungal treatment, cryptococcal meningitis is uniformly fatal. Differential Diagnosis Dilated Perivascular Spaces (168) • absent parenchymal or leptomeningeal enhancement • no T2 hyperintensity around the fluid-containing spaces Other Meningoencephalitides • no perivascular space enlargement Cerebral Toxoplasmosis (157) • focal ring enhancing lesions, “eccentric target sign” • no perivascular space dilatation Background Cryptococcus neoformans is a ubiquitous yeast-like fungus found in soil contaminated by bird excreta.
The mainstay of treatment for DCVT is heparin. In cases of severe neurologic deterioration, endovascular catheter-directed thrombolytic therapy (and possibly open surgical thrombectomy) is required. Pertinent Clinical Information Patients with DCVT tend to present with a short history (usually less than a week), most commonly of headache and reduced consciousness. D-dimer levels have low positive predictive value, but they are useful in ruling out cerebral venous thrombosis, given their high negative predictive value.