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In 22(73%)of the 30 patients with temporal arteritis,ultrasonography showed a dark halo around the lumen of the temporal arteries.The halos disappeared after a mean of 16 days(range,7 to 56)of treatment with corticosteroids.Twenty-four patients(80%)had stenoses or occlusions of temporal artery stenosis,occlusions or a halo.No halos were identified in the 82 patients without temporal arteritis;6(7%)had stenoses or occlusions.For each of the three types of abnormalities identified by ultrasonography,the interrater agreement was>/=95%.There are characteristic signs of temporal arteritis that can be visualized by color duplex ultrasonography.The most specific sign is a dark halo,which may be due to edema of the artery wall.In patients with typical clinical signs and a halo on ultrasonography,it may be possible to make a diagnosis of temporal arteritis and begin treatment without performing a temporal- artery biopsy. |
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arteritides
arteritis,temporal
doppler
doppler,color
duplex ultrasound
neurologic disease,diagnoses of
polymyalgia rheumatica
steroid
temporal artery,biopsy
treatment of neurologic disorder
ultrasonography
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