Rate and diagnostic accuracy of magnetic resonance elastography, ultrasound elastography, and aspartate aminotransferase to platelets ratio index (apri) measurements for the noninvasive staging of fibrosis in patients with chronic liver disease. Methods: we performed a prospective blind comparison of magnetic resonance elastography, ultrasound elastography, and apri in a consecutive series of patients who underwent liver biopsy for chronic liver disease in a university-based hospital. Histopathologic staging of liver fibrosis according to the metavir scoring system served as the reference. Results: a total of 141 patients were assessed. canadian no prescription viagra The technical success rate of magnetic resonance elastography was higher than that of ultrasound elastography (133/141 [94%] vs 118/141 [84%]; p =. 016). viagra 100 or 50 mg Magnetic and ultrasound elastography, apri measurements, and histopathologic analysis of liver biopsy specimens were technically successful in 96 patients. The areas under the receiver operating characteristic curves of magnetic resonance elasticity (0. cheap viagra online pharmacy 994 for f ≥ 2; 0. 985 for f ≥ 3; 0. 998 for f = 4) were larger (p <. 05) than those of ultrasound elasticity, apri, and the combination of ultrasound elasticity and apri (0. buy viagra online 837, 0. 709, and 0. 849 for f ≥ 2; 0. viagra cost to develop 906, 0. 816, and 0. generic viagra 936 for f ≥ 3; 0. buy generic viagra 930, 0. 820, and 0. generic viagra online 944 for f = 4, respectively). viagra 100 or 50 mg Conclusions: magnetic resonance elastography has a higher technical success rate than ultrasound elastography and a better diagnostic accuracy than ultrasound elastography and apri for staging liver fibrosis. Abbreviations used in this paper apri, aspartate aminotransferase to platelets ratio index; ci, confidence interval; mr, magnetic resonance; roc, receiver operating characteristics figures and tables from this article: figure 1. unterschied viagra viagra viagra  flow diagram of patients who underwent liver biopsy for chronic liver disease in the department of gastroenterology during the 16-month study period. buy viagra on line Figure options view in workspace figure 2.  box plots of (a) mr elasticity, (b) ultrasound elasticity, and (c) apri for each metavir fibrosis stage. The boundary of boxes closest to 0 indicates the 25th percentile, the line within boxes shows the median, and the bo. can you buy viagra in spain over the counter