Fig 4.

Diagnostic accuracy characteristics of imaging techniques. Diagnostic performance of imaging techniques expressed as area under the curve, summary false-positive rate, summary true-positive rate, and diagnostic odds ratio for diffuse gliomas as a whole—that is, low- and high-grade gliomas combined (A), low-grade glioma (B), and high-grade glioma (C). The medians of posterior distributions are plotted as squares proportional to the number of observations with 95% credibility intervals. The most common clinically used imaging technique is in blue as reference. n.a. indicates nonavailable data because either <3 studies were available or the posterior samples did not converge; fa, fractional anisotropy.