Volume 20, Issue 2 (7-2014)                   Horizon Med Sci 2014, 20(2): 93-99 | Back to browse issues page

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1- Radiology Department, Medicine Faculty, Iran University of Medical Sciences, Tehran, Iran
Abstract:   (3654 Views)
Abstract Aims: Temporal arteritis is one of the rare vascular diseases. The common diagnosis method of this disease is invasive biopsy of the temporal artery wall that despite of partial precision have several side effects. The aim of this study was to investigate the sensitivity, specificity, accuracy, positive predictive value and negative predictive value of duplex ultrasonography compared to invasive biopsy. Materials & Methods: This cross-sectional study was conducted in Rasool-e-Akram Hospital, from the March, 2012 to the end of March, 2013. 20 patients suspected to have temporal arteritis were introduced using convenient sampling method from Rasool-e-Akram Hospital ophthalmologic ward for duplex ultrasonographic examinations. Ultrasonography was performed on three sections of the superficial temporal arteries and the frontal and parietal branches in both longitudinal and transverse sections. Findings: Observing halo sign (p=0.0001), temporal artery stenosis (p=0.001) and irregularities in the arterial wall (p=0.001) in duplex ultrasonography were significantly able to diagnosis the temporal arteritis. Agreement between the two methods was obtained as 0.7, based on the Kappa test (p=0.001). The sensitivity of duplex ultrasonography based on symptoms compared to the biopsy was 100%, specificity was 76.9%, the positive predictive value was 70%, negative predictive value was 100% and the accuracy was 85%. Conclusion: Duplex ultrasonography seems to be a good alternative for invasive biopsies to diagnose temporal arteritis.
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Type of Study: Original | Subject: Diseases
Received: 2014/04/14 | Accepted: 2014/07/1 | Published: 2014/07/1