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  2. Computed tomography of the head - Wikipedia

    en.wikipedia.org/.../Computed_tomography_of_the_head

    Special views focusing on the orbit of the eye may be taken to investigate concerns relating to the eye. [8] CT scans are used by physicians specializing in treating the eye (ophthalmologists) to detect foreign bodies (especially metallic objects), fractures, abscesses, cellulitis, sinusitis, bleeding within the skull (intracranial bleeding), proptosis, Graves disease changes in the eye, and ...

  3. File:CT of a normal brain, sagittal 22.png - Wikipedia

    en.wikipedia.org/wiki/File:CT_of_a_normal_brain...

    Computed tomography of the head, without intravenous contrast, here presented in the sagittal plane with 4 mm slice thickness. It shows normal anatomy, with no injuries. The subject is an 18 year old male who had blunt trauma to the head after a 25 m long jump during motocross.

  4. Dense MCA sign - Wikipedia

    en.wikipedia.org/wiki/Dense_MCA_sign

    The dense MCA sign is a dense artery sign observed on non-contrast computed tomography (CT) of the brain and is an important early marker of acute ischemic stroke involving the middle cerebral artery territory. [1] It refers to an abnormally increased attenuation (hyperdensity) of the MCA, reflecting an intraluminal thrombus or embolus.

  5. CT scan - Wikipedia

    en.wikipedia.org/wiki/CT_scan

    CT Perfusion scan of the brain. CT perfusion imaging is a specific form of CT to assess flow through blood vessels whilst injecting a contrast agent. [21] Blood flow, blood transit time, and organ blood volume, can all be calculated with reasonable sensitivity and specificity. [21]

  6. Subarachnoid hemorrhage - Wikipedia

    en.wikipedia.org/wiki/Subarachnoid_hemorrhage

    The modality of choice is computed tomography (CT scan), without contrast, of the brain. This has a high sensitivity and will correctly identify 98.7% of cases within six hours of the onset of symptoms. [31] A CT scan can rule out the diagnosis in someone with a normal neurological exam if done within six hours. [32]

  7. Intracranial hemorrhage - Wikipedia

    en.wikipedia.org/wiki/Intracranial_hemorrhage

    CT scan (computed tomography) of the brain (without any iodinated contrast), is the initial imaging choice because of its high speed, good accessibility in hospitals, high sensitivity in detecting brain injuries or brain diseases, thus helping to triage patients in emergency department in a timely manner and urgent neurosurgical intervention ...

  8. Head injury - Wikipedia

    en.wikipedia.org/wiki/Head_injury

    A non-contrast CT of the head should be performed immediately in all those who have sustained a moderate or severe head injury. A CT is an imaging technique that allows physicians to see inside the head without surgery in order to determine if there is internal bleeding or swelling in the brain. [31] Computed tomography (CT) has become the ...

  9. Computed tomography angiography - Wikipedia

    en.wikipedia.org/wiki/Computed_tomography...

    Volume rendered CT scan of abdominal and pelvic blood vessels. CT angiography is a contrast CT where images are taken with a certain delay after injection of radiocontrast material. The contrast material is radiodense causing it to light up brightly within the blood vessels of interest. In order for the CT scanner to be able to scan the correct ...