Intracerebral metastases MRI: Difference between revisions
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==Overview== | ==Overview== | ||
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'''DWI:''' edema is out of proportion with tumour size and appears dark on trace-weighted DWI. | '''DWI:''' edema is out of proportion with tumour size and appears dark on trace-weighted DWI. | ||
Nuclear medicine | Nuclear medicine | ||
==Gallery== | |||
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Image:Brain metastases MRT-T1WI.jpg|<sub>Brain metastasis in the right cerebral hemisphere from lung cancer shown on T1-weighted magnetic resonance imaging with intravenous contrast.<ref name=brainmetastasisimage1>Brain metastasis. Wikipedia 2015. https://en.wikipedia.org/wiki/Brain_metastasis. Accessed on November 9, 2015</ref></sub> | |||
</gallery> | |||
==References== | ==References== | ||
Revision as of 15:30, 9 November 2015
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Intracerebral metastases Microchapters |
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Differentiating Intracerebral Metastases from other Diseases |
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Diagnosis |
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Treatment |
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Case Studies |
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Intracerebral metastases MRI On the Web |
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American Roentgen Ray Society Images of Intracerebral metastases MRI |
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Risk calculators and risk factors for Intracerebral metastases MRI |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Sujit Routray, M.D. [2]
Overview
MRI
T1W: Typically iso to hypointense mass, however melanoma metastases are an exception to this rule (hyperintense due to the paramagnetic properties of melanin).
T2W: Typically hyperintense. If metastases are scattered the pattern may mimic vascular disease.
FLAIR: Typically hyperintense with hyperintense peritumoral edema.
T1 C+: The enhancement pattern can be uniform, punctuate, or ring-enhanced, but it is usually intense. Delayed sequences may show additional lesions, therefore contrast-enhance MR is the current standard for small met detection.
MRS: Intratumoral choline peak with no choline elevation in the peritumoral edema. Any tumor necrosis results in a lipid peak.
DWI: edema is out of proportion with tumour size and appears dark on trace-weighted DWI. Nuclear medicine
Gallery
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![Brain metastasis in the right cerebral hemisphere from lung cancer shown on T1-weighted magnetic resonance imaging with intravenous contrast.[1]](/images/4/4f/Brain_metastases_MRT-T1WI.jpg)
Brain metastasis in the right cerebral hemisphere from lung cancer shown on T1-weighted magnetic resonance imaging with intravenous contrast.[1]
![Brain metastasis in the right cerebral hemisphere from lung cancer shown on T1-weighted magnetic resonance imaging with intravenous contrast.[1]](/index.php/File:Brain_metastases_MRT-T1WI.jpg)
References
- ↑ Brain metastasis. Wikipedia 2015. https://en.wikipedia.org/wiki/Brain_metastasis. Accessed on November 9, 2015