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  2. Stroke recovery - Wikipedia

    en.wikipedia.org/wiki/Stroke_recovery

    The incidence of post-stroke depression peaks at 3–6 months and usually resolves within 1–2 years after the stroke, although a minority of patients can go on to develop chronic depression. The diagnosis of post-stroke depression is complicated by other consequences of stroke such as fatigue and psychomotor retardation – which do not ...

  3. Neuroimaging - Wikipedia

    en.wikipedia.org/wiki/Neuroimaging

    CT scans can expose patients to levels of radiation 100-500 times higher than traditional x-rays, with higher radiation doses producing better resolution imaging. [37] While easy to use, increases in CT scan use, especially in asymptomatic patients, is a topic of concern since patients are exposed to significantly high levels of radiation. [36]

  4. Soft X-ray transient - Wikipedia

    en.wikipedia.org/wiki/Soft_X-ray_transient

    In effect the compact object "gobbles up" the normal star, and the X-ray emission can provide the best view of how this process occurs. [3] The "soft" name arises because in many cases there is strong soft (i.e. low-energy) X-ray emission from an accretion disk close to the compact object, although there are exceptions which are quite hard.

  5. Magnetic resonance imaging of the brain - Wikipedia

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

    A number of different imaging modalities or sequences can be used with imaging the nervous system: T 1-weighted (T1W) images: Cerebrospinal fluid is dark. T 1-weighted images are useful for visualizing normal anatomy. T 2-weighted (T2W) images: CSF is light, but fat (and thus white matter) is darker than with T 1.

  6. Cerebral angiography - Wikipedia

    en.wikipedia.org/wiki/Cerebral_angiography

    Rarely, 0.3 to 1% of the cases experience cortical blindness from 3 minutes to 12 hours after the procedure. It is a condition where those affected experienced loss of vision with normal pupillary light reflex, and normal extraocular muscles movement. The condition can sometimes be accompanied by headaches, mental state changes, and memory ...

  7. Radiation damage - Wikipedia

    en.wikipedia.org/wiki/Radiation_damage

    Radiation can have harmful effects on solid materials as it can degrade their properties so that they are no longer mechanically sound. This is of special concern as it can greatly affect their ability to perform in nuclear reactors and is the emphasis of radiation material science , which seeks to mitigate this danger.

  8. Midline shift - Wikipedia

    en.wikipedia.org/wiki/Midline_shift

    The sign is considered ominous because it is commonly associated with a distortion of the brain stem that can cause serious dysfunction evidenced by abnormal posturing and failure of the pupils to constrict in response to light. [1] Midline shift is often associated with high intracranial pressure (ICP), which can be deadly. [1]

  9. X-ray optics - Wikipedia

    en.wikipedia.org/wiki/X-ray_optics

    X-ray optics is the branch of optics dealing with X-rays, rather than visible light.It deals with focusing and other ways of manipulating the X-ray beams for research techniques such as X-ray diffraction, X-ray crystallography, X-ray fluorescence, small-angle X-ray scattering, X-ray microscopy, X-ray phase-contrast imaging, and X-ray astronomy.

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