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. 2019 Jun 23;46(8):3700–3708. doi: 10.1002/mp.13638

Figure 3.

Figure 3

Receiver operator characteristic (ROC) curves for the 245 phantom results evaluated by institutional intensity‐modulated radiation therapy (IMRT) quality assurance (QA) using an array device and a 3%/3 mm criterion. The upper line shows the ROC curve for this cohort evaluated using the Imaging and Radiation Oncology Core (IROC) recalculation (area under the curve [AUC] = 0.79) where the tolerance for dose disagreement in the PTV was varied. The lower line shows the ROC curve for this cohort evaluated using institutional IMRT QA (AUC = 0.60) where the percent of pixels passing gamma was varied. Sensitivity and specificity were relative to identification of phantoms that failed IROC criteria. [Color figure can be viewed at wileyonlinelibrary.com]