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  2. Brain ischemia - Wikipedia

    en.wikipedia.org/wiki/Brain_ischemia

    Brain ischemia has been linked to a variety of diseases or abnormalities. Individuals with sickle cell anemia, compressed blood vessels, ventricular tachycardia, plaque buildup in the arteries, blood clots, extremely low blood pressure as a result of heart attack, and congenital heart defects have a higher predisposition to brain ischemia in comparison to the average population.

  3. Leukoaraiosis - Wikipedia

    en.wikipedia.org/wiki/Leukoaraiosis

    Axial T2 FLAIR sequence MR image of a middle-aged man with leukoaraiosis. MRI image: Leukoaraiosis in a 90-year-old patient with cerebral atrophy. 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 ...

  4. Watershed stroke - Wikipedia

    en.wikipedia.org/wiki/Watershed_stroke

    An MRI with special sequences called diffusion-weighted MR imaging (DWI), is very sensitive for locating areas of an ischemic based stroke, such as a watershed stroke. Further diagnosis and evaluation of a stroke includes evaluation of the blood vessels in the neck using either Doppler ultrasound, MR-angiography or CT-angiography, or formal ...

  5. Vascular dementia - Wikipedia

    en.wikipedia.org/wiki/Vascular_dementia

    Ischemic changes in the brain are irreversible, but the person with vascular dementia can demonstrate periods of stability or even mild improvement. [18] Since stroke is an essential part of vascular dementia, [ 13 ] the goal is to prevent new strokes.

  6. MRI contrast agent - Wikipedia

    en.wikipedia.org/wiki/MRI_contrast_agent

    Effect of contrast agent on images: Defect of the blood–brain barrier after stroke shown in MRI. T 1-weighted images, left image without, right image with contrast medium administration. Gadolinium(III) containing MRI contrast agents (often termed simply "gado" or "gad") are the most commonly used for enhancement of vessels in MR angiography ...

  7. Magnetic resonance imaging of the brain - Wikipedia

    en.wikipedia.org/wiki/Magnetic_resonance_imaging...

    The first study of the human brain at 3.0 T was published in 1994, [13] and in 1998 at 8 T. [14] Studies of the human brain have been performed at 9.4 T (2006) [15] and up to 10.5 T (2019). [ 16 ] Paul Lauterbur and Sir Peter Mansfield were awarded the 2003 Nobel Prize in Physiology or Medicine for their discoveries concerning MRI.

  8. Diffuse axonal injury - Wikipedia

    en.wikipedia.org/wiki/Diffuse_axonal_injury

    Diffuse axonal injury after a motorcycle accident. MRI after 3 days: on T1-weighted images the injury is barely visible. On the FLAIR, DWI and T2*-weighted images a small bleed is identifiable. DAI is difficult to detect since it does not show up well on CT scans or with other macroscopic imaging techniques, though it shows up microscopically. [9]

  9. Intraparenchymal hemorrhage - Wikipedia

    en.wikipedia.org/wiki/Intraparenchymal_hemorrhage

    A CT scan is the best test to look for bleeding in or around your brain. In some hospitals, a perfusion CT scan may be done to see where the blood is flowing and not flowing in your brain. Magnetic resonance imaging (MRI scan): A special MRI technique (diffusion MRI) may show evidence of an ischemic stroke within minutes of symptom onset. In ...