Search results
Results from the WOW.Com Content Network
obliteration of radial pulse with manoeuvres Alexander's law: Gustav Alexander: neurology, neurosurgery, ENT: vestibular lesions: describes nystagmus in vestibular lesions Allen's test: Edgar Van Nuys Allen: vascular surgery, critical care [1] arterial supply of the hand: tests for presence of palmar ulnar-radial anastomosis (palmar arch) Apgar ...
Vertebral artery dissection is one of the two types of cervical artery dissection.The other type, carotid artery dissection, involves the carotid arteries.Vertebral artery dissection is further classified as being either traumatic (caused by mechanical trauma to the neck) or spontaneous, and it may also be classified by the part of the artery involved: extracranial (the part outside the skull ...
As the non-contrast CT and spine CT angiography are ineffective in imaging modalities, doctors use MRI to confirm the diagnosis. MRI findings, including pencillike hyperintensities on T2-weighted sagittal images and "owl's eyes" or "snake eyes" sign on T2 axial images, indicate the infarction is predominately in the watershed area of the gray ...
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.
Doppler arteriography, with probes at the fingertips and arms, tests the force and "smoothness" of the blood flow through the radial arteries, with and without having the patient perform various arm maneuvers (which causes compression of the subclavian artery at the thoracic outlet).
Carotid artery dissection is thought to be more commonly caused by severe violent trauma to the head and/or neck. An estimated 0.67% of patients admitted to the hospital after major motor vehicle accidents were found to have blunt carotid injury, including intimal dissections, pseudoaneurysms, thromboses, or fistulas. [20]
An injury to a spinal nerve may thus also entail an injury to the corresponding radicular artery with consequent ischaemic damage to the corresponding spinal cord segment. [1] The radicular arteries additionally provide arterial supply to the posterior and anterior roots of a spinal nerve as well as the sensory ganglion. [2]
Thus when X-ray findings are normal but SCI is still suspected due to pain or SCI symptoms, CT or MRI scans are used. [89] CT gives greater detail than X-rays, but exposes the patient to more radiation, [91] and it still does not give images of the spinal cord or ligaments; MRI shows body structures in the greatest detail. [10]