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  2. Leukoaraiosis - Wikipedia

    en.wikipedia.org/wiki/Leukoaraiosis

    Head CT showing periventricular white matter lesions. Leukoaraiosis is a particular abnormal change in appearance of white matter near the lateral ventricles. It is often seen in aged individuals, but sometimes in young adults. [1] [2] On MRI, leukoaraiosis changes appear as white matter hyperintensities (WMHs) in T2 FLAIR images.

  3. Dense MCA sign - Wikipedia

    en.wikipedia.org/wiki/Dense_MCA_sign

    The dense MCA sign is often accompanied by other early ischemic changes on CT, including: Loss of gray-white matter differentiation in the MCA territory (insular ribbon sign). [7] Sulcal effacement due to early brain edema. Hypodensity of the lentiform nucleus (basal ganglia involvement of ischemia).

  4. External capsule - Wikipedia

    en.wikipedia.org/wiki/External_capsule

    The external capsule is a series of white matter fiber tracts in the brain. These fibers run between the most lateral (toward the side of the head) segment of the lentiform nucleus (more specifically the putamen) and the claustrum. The white matter of the external capsule contains fibers known as corticocortical association fibers.

  5. Intracranial hemorrhage - Wikipedia

    en.wikipedia.org/wiki/Intracranial_hemorrhage

    Definitive diagnosis of CAA is by performing brain biopsy [3] CT scan may show hyperdense intra-axial hemorrhage in the subcortical region. Diffuse white matter hypodensities in both cerebral hemispheres may represents microangiopathic changes.

  6. White matter - Wikipedia

    en.wikipedia.org/wiki/White_matter

    White matter is composed of bundles, which connect various grey matter areas (the locations of nerve cell bodies) of the brain to each other, and carry nerve impulses between neurons. Myelin acts as an insulator, which allows electrical signals to jump , rather than coursing through the axon, increasing the speed of transmission of all nerve ...

  7. Corona radiata - Wikipedia

    en.wikipedia.org/wiki/Corona_radiata

    Evidence from subcortical small infarcts suggests that motor fibers are somatotopically arranged in the human corona radiata. Following subtotal brain damage, localization of the corticofugal projection in the corona radiata and internal capsule can assist in evaluating a patient's residual motor capacity and predicting their potential for functional restitution.

  8. Lentiform nucleus - Wikipedia

    en.wikipedia.org/wiki/Lentiform_nucleus

    The lentiform nucleus (or lentiform complex, lenticular nucleus, or lenticular complex) are the putamen (laterally) and the globus pallidus (medially), collectively. Due to their proximity, these two structures were formerly considered one, however, the two are separated by a thin layer of white matter - the external medullary lamina - and are functionally and connectionally distinct.

  9. Leukoencephalopathy with vanishing white matter - Wikipedia

    en.wikipedia.org/wiki/Leukoencephalopathy_with...

    The MRI of patients with VWM shows a well defined leukodystrophy. These MRIs display reversal of signal intensity of the white matter in the brain. Recovery sequences and holes in the white matter are also visible. [4] Over time, the MRI is excellent at showing rarefaction and cystic degeneration of the white matter as it is replaced by fluid.