Fig. 4From: Semi-automatic carotid intraplaque hemorrhage detection and quantification on Magnetization-Prepared Rapid Acquisition Gradient-Echo (MP-RAGE) with optimized threshold selectionSensitivity and specificity using different thresholds based on two types of references. (a) The adjacent muscle and (b) the median intensity within the ROI. Red line shows the optimized thresholds (heavily calcified IPH areas and IPH area < 2.80 mm2 excluded, n = 95)Back to article page