Diagnostic accuracy of salivary scintigraphic indices in xerostomic populations.

摘要: Purpose: Three decades of work to enhance the diagnostic accuracy salivary scintigraphy have generated various plausible decision criteria. This study evaluates four commonly cited numeric indices in studies xerostomic populations and how accurately they identify Sjogren's syndrome, chronic sialadenitis, radiation drug effects distinguish each from other. Methods: Stimulated dynamic was performed on 295 patients 31 controls. The nonparametric area under receiver operating characteristic curves expressed following scintigraphic indices: parotid:submandibular ratio unstimulated glandular activity, peak:baseline uptake ratio, its time occurrence, stimulated excretion fraction. Results: fraction distinguished syndrome sialadenitis healthy states with respective accuracies 0.78 0.90. maximum payoff occurred at a cutoff 73%, yielding 73% rate test sensitivity specificity. other three were not useful. Even indifferently or poorly most tasks. Conclusions: In examination populations, an acceptable utility evident only sialadenitis. When presented differential alternatives involving none acceptably.