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Intracranial Lesions with High Signal Intensity on T1-weighted MR Images: Differential Diagnosis

By | MRI-Topics | No Comments

Diverse categories of intracranial lesions appear bright at T1-weighted MR imaging. Familiarity with the types of substances and physical properties that contribute to T1 shortening is helpful for formulating an appropriate differential diagnosis and a systematic approach to the interpretation of high-signal-intensity lesions seen on T1-weighted images. Many disease entities have characteristic clinical and imaging features that allow definitive diagnosis.

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FLAIR2 : A Combination of FLAIR and T2 for Improved MS Lesion Detection 

By | MRI-Topics | No Comments

FLAIR and double inversion recovery are important MR imaging scans for MS. The suppression of signal
from CSF in FLAIR and the additional suppression of WM signal in double inversion recovery improve contrast between lesions, WM and
GM, albeit at a reduced SNR. However, whether the acquisition of double inversion recovery is necessary is still debated. Here, we present
an approach that allows obtaining CSF-suppressed images with improved contrast between lesions, WM and GM without strongly
penalizing SNR.

MRI image

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