versión impresa ISSN 0100-3984versión On-line ISSN 1678-7099
LEAO, Alberto Ribeiro de Souza et al. Portal blood flow volume measurement in schistosomal patients: evaluation of Doppler ultrasonography reproducibility. Radiol Bras [online]. 2008, vol.41, n.5, pp.305-308. ISSN 0100-3984. http://dx.doi.org/10.1590/S0100-39842008000500007.
OBJECTIVE: To evaluate the reproducibility of Doppler ultrasonography in the measurement of portal blood flow volume in schistosomal patients. MATERIALS AND METHODOS: Prospective, transversal, observational and self-paired study evaluating 21 patients with hepatosplenic schistosomiasis submitted to Doppler ultrasonography performed by three independent observers for measurement of portal blood flow. Pairwise interobserver agreement was calculated by means of the intraclass correlation coefficient, paired t-test and Pearson's correlation coefficient. RESULTS: Interobserver agreement was excellent. Intraclass correlation ranged from 80.6% to 93.0% (IC at 95% [65.3% ; 95.8%]), with the Pearson's correlation coefficient ranging between 81.6% and 92.7% with no statistically significant interobserver difference regarding the mean portal blood flow volume measured by Doppler ultrasonography (p = 0.954 / 0.758 / 0.749). CONCLUSION: Doppler ultrasonography has demonstrated to be a reliable method for measuring the portal blood flow volume in patients with portal hypertension secondary to schistosomiasis, with a good interobserver agreement.
Palabras clave : Portal flow; Measurement; Doppler ultrasonography; Reproducibility; Portal hypertension.