کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4236281 1282895 2007 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
IRM fonctionnelle cérébrale : bases physiologiques, techniques et applications cliniques
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی رادیولوژی و تصویربرداری
پیش نمایش صفحه اول مقاله
IRM fonctionnelle cérébrale : bases physiologiques, techniques et applications cliniques
چکیده انگلیسی
Brain functional MRI (fMRI) provides an indirect mapping of cerebral activity, based on the detection of local changes in blood flow and oxygenation levels that are associated with neuronal activity (BOLD contrast). fMRI allows noninvasive studies of normal and pathological aspects of the brain's functional organization. It is based on the comparison of two or more cognitive states. Echoplanar imaging is the technique of choice, providing the quickest study of the entire brain. Activation maps are calculated from a statistical analysis of the local signal changes. fMRI has become one of the most widely used functional imaging techniques in neuroscience. In clinical practice, fMRI can identify eloquent areas involved in motor and language functions in surgical patients and can evaluate the risk of postoperative neurological deficit.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal de Radiologie - Volume 88, Issue 3, Part 2, March 2007, Pages 497-509
نویسندگان
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