Neuroradiology.

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Presentation transcript:

Neuroradiology

IMAGING TECHNIQUES PLAIN FILMS COMPUTED TOMOGRAPHY MAGNETIC RESONANCE IMAGING DIGITAL ANGIOGRAPHY ULTRASOUND DOPPLER US PET

Brain Imaging The basic imaging tools Digital Substraccion Angiography (DSA) uses a X ray tube, imaging intensifier digital process. Ultrasound (Doppler) Carotid, transcranial Nuclear Medicine (SPECT, PET, PET/CT)

EARLY SIGNS OF ISCHEMIC INFARCT MRI T1 HYPOINTENSITY T2, FLAIR HYPERINTENSITY DWI HYPERINTENSITY DECREASED SIGNAL IN PERFUSION IMAGES

CEREBRAL VASCULAR EVENT ISCHEMIC HEMORRHAGIC

CEREBRO VASCULAR EVENT ISCHEMIC THROMBO EMBOLIC VASCULITIS DISSECTION FIBROMUSCULAR DISPLASIA VENOUS THROMBOSIS ANOXIA

EARLY SIGS OF ISCHEMIC INFARCT LOSS OF DEFINITION BETWEEN GRAY AND WHITE MATTER ILL DEFINITION OF INTERNAL CAPSULE HYPERDENSE MIDDLE CEREBRAL ARTERY

CEREBRO VASCULAR EVENT HEMORRHAGIC HYPERTENSION ANEURYSM VASCULAR MALFORMATION TRAUMA COAGULOPATHY AMYLOIDOSIS

TRAUMA CONTUSION DIFFUSE AXONAL INJURY SUBDURAL HEMATOMA EPIDURAL HEMATOMA SUBARACHNOID HEMORRHAGE

SEIZURE CONGENITAL MALFORMATION MESIAL SCLEROSIS CVA POSTTRAUMATIC

INFLAMMATORY MENINGO ENCEPHALITIS ABCESS TOXOPLASMOSIS

NEOPLASIA GLIOMAS LYMPHOMA MEDULOBLASTOMA PINEAL TUMOR PITUITARY ADENOMA EXTRAAXIAL TUMORS MENINGIOMA SCHWANNOMA

DEMYELINATING DISEASE MULTIPLE SCLEROSIS ADEM

Differential Diagnosis for ring-enhancing lesions: MAGICAL DR M - Metastasis, MS A - Abscess G - Glioblastoma, Granuloma I - Infarct (esp. Basal ganglia) C - Contusion (rare) A - AIDS (Toxo, etc.) L - Lymphoma (in aids) D - Demyelination (active) R - Resolving hematoma, Radiation change (necrosis)