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Diagnostic Imaging

Diseases of the Brain, Head & Neck, Spine: Diagnostic by Jürg Hodler, Gustav K. von Schulthess, Christoph L.

By Jürg Hodler, Gustav K. von Schulthess, Christoph L. Zollikofer

Written by way of the world over popular specialists, this quantity is a set of chapters facing imaging analysis and interventional remedies in neuroradiology and illnesses of the backbone. the various issues are disease-oriented and surround all of the proper imaging modalities together with X-ray expertise, nuclear drugs, ultrasound and magnetic resonance, in addition to image-guided interventional concepts. It represents a different adventure for citizens in radiology in addition to for skilled radiologists wishing to be up to date at the present country of the art.

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Extra resources for Diseases of the Brain, Head & Neck, Spine: Diagnostic Imaging and Interventional Techniques

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Bilateral dissections, either carotid or vertebral, are not rare. b Fig. 3 a, b. Telangiectasia. Gradient-echo technique (a) shows a focal area of hypointensity that blushes on the post-contrast T1 study (b). These lesions are typically not well seen on T2 or FLAIR sequences and have no mass effect. They may have an associated developmental venous anomaly 24 Robert Willinsky Dissections of the carotid or vertebral artery arise from a tear of the intima. The intramural hematoma may be subintimal or subadventitial.

Neurology 49:113-119 Mullins ME, Schaefer PW, Sorensen AG et al (2002) CT and conventional and diffusion-weighted MR imaging in acute stroke: study in 691 patients at presentation to the emergency department. Radiology 224:353-360 Lansberg MG, Thijs VN, O’Brien MW et al (2001) Evolution of apparent diffusion coefficient, diffusion-weighted, and T2weighted signal intensity of acute stroke. AJNR Am J Neuroradiol 22:637-644 Burdette J, Ricci PE, Petitti N, Elster AD (1998) Cerebral infarction: time course of signal intensity changes on diffusionweighted MR images.

On non-contrast CT, they frequently appear as focal areas of increased density within the brain, of- a ten without mass effect. The characteristic MRI appearance is a well-defined, lobulated lesion with a reticulated core of heterogeneous signal intensity on T1- and T2- weighted sequences, resulting from thrombosis, fibrosis, calcification, and hemorrhage. On T2-weighted or gradient-echo images, there is a peripheral ring of hypointensity that corresponds to the deposition of hemosiderin in the surrounding brain parenchyma.

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