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  2. Giant cell arteritis - Wikipedia

    en.wikipedia.org/wiki/Giant_cell_arteritis

    Giant cell arteritis (GCA), also called temporal arteritis, is an inflammatory autoimmune disease of large blood vessels. [ 4 ] [ 7 ] Symptoms may include headache , pain over the temples, flu-like symptoms , double vision , and difficulty opening the mouth. [ 3 ]

  3. Anterior ischemic optic neuropathy - Wikipedia

    en.wikipedia.org/wiki/Anterior_ischemic_optic...

    AAION is due to temporal arteritis (also called giant-cell arteritis), an inflammatory disease of medium-sized blood vessels (Chapel-Hill-Conference) that occurs especially with advancing age. In contrast, NAION results from the coincidence of cardiovascular risk factors in a patient with "crowded" optic discs.

  4. Halo sign - Wikipedia

    en.wikipedia.org/wiki/Halo_sign

    In radiology, the halo sign is a finding of a dark halo around the arterial lumen on ultrasound that suggests the diagnosis of temporal arteritis. [1] The standard diagnostic test for temporal arteritis is biopsy; however, ultrasound and MRI show promise for replacing it.

  5. Arteritis - Wikipedia

    en.wikipedia.org/wiki/Arteritis

    Arteritis is a vascular disorder characterized by inflammation of the walls of arteries, [1] usually as a result of infection or autoimmune responses. Arteritis, a complex disorder, is still not entirely understood. [2] Arteritis may be distinguished by its different types, based on the organ systems affected by the disease. [2]

  6. Magnetic resonance angiography - Wikipedia

    en.wikipedia.org/wiki/Magnetic_resonance_angiography

    Magnetic resonance angiography (MRA) is a group of techniques based on magnetic resonance imaging (MRI) to image blood vessels. Magnetic resonance angiography is used to generate images of arteries (and less commonly veins) in order to evaluate them for stenosis (abnormal narrowing), occlusions, aneurysms (vessel wall dilatations, at risk of rupture) or other abnormalities.

  7. Instruments used in radiology - Wikipedia

    en.wikipedia.org/wiki/Instruments_used_in_radiology

    uses ultrasound to produce images from within the body; video link: X-ray: uses X-rays to produce images of structures within the body; video link: Contrast media for X-rays: to provide a high contrast image of the details of the viscera under study; e.g. salts of heavy metals, gas like air, radio-opaque dyes, organic iodides, etc ...

  8. Focused ultrasound - Wikipedia

    en.wikipedia.org/wiki/Focused_ultrasound

    [1] [34] MRgFUS is a 3D imaging technique which features high soft tissue contrast and provides information about temperature, thus allowing to monitor ablation. However, low frame rate makes this technique perform poorly in real-time imaging and high costs represent a significant limitation to its use. [35]

  9. Contrast-enhanced ultrasound - Wikipedia

    en.wikipedia.org/wiki/Contrast-enhanced_ultrasound

    Destruction of microbubbles by ultrasound [30] in the image plane allows absolute quantification of tissue perfusion. [31] Ultrasonic molecular imaging is safer than molecular imaging modalities such as radionuclide imaging because it does not involve radiation. [29] Alternative molecular imaging modalities, such as MRI, PET, and SPECT are very ...