Differential Diagnosis of Intracranial Lesions with High Signal on T1 or Low Signal on T2-weighted MRI

Magnetic resonance imaging (MRI) is the preferred technique for examining intracranial pathology in the non-acute setting in most cases. The aim of this review is to demonstrate the imaging appearances on unenhanced spin-echo MRI of lesions that show characteristic, unusual signal changes, which occ...

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Bibliographic Details
Published in:Clinical Radiology 2003-12, Vol.58 (12), p.922-933
Main Authors: Warakaulle, D.R., Anslow, P.
Format: Article
Language:English
Subjects:
Biological and medical sciences
brain
Brain Diseases - diagnosis
Brain Neoplasms - diagnosis
cholesterol
Craniopharyngioma - diagnosis
Dermoid Cyst - diagnosis
Diagnosis, Differential
Epidermal Cyst - diagnosis
fat
flow void
Granuloma - diagnosis
Hemochromatosis - diagnosis
Hemochromatosis - genetics
Hepatolenticular Degeneration - diagnosis
Humans
Lipoma - diagnosis
Magnetic Resonance Imaging - methods
Medical sciences
Melanoma - diagnosis
MRI
Neurology
paramagnetic
Tumors of the nervous system. Phacomatoses
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Description
Summary:Magnetic resonance imaging (MRI) is the preferred technique for examining intracranial pathology in the non-acute setting in most cases. The aim of this review is to demonstrate the imaging appearances on unenhanced spin-echo MRI of lesions that show characteristic, unusual signal changes, which occur due to the presence of fat, cholesterol, paramagnetic substances, rapidly flowing fluids, air, cortical bone or calcification. The nature of the MRI signal, together with the anatomical location of the lesion should allow the provision of a narrow differential diagnosis, before the use of intravenous contrast medium or additional imaging sequences.
ISSN:0009-9260
1365-229X
DOI:10.1016/S0009-9260(03)00268-X