Fig. 4
From: Phase contrast CMR in the descending aorta as a supportive reference for severe aortic regurgitation
Confusion matrices from validation analysis of threshold values for (a) RVolDA and (b) RFDA, as well as for HFR and DFR velocity with c, e) RVolAAo>42mL as reference9 and d, f) RFAAo>33% as reference9, in cohort 2 (Fig. 1). Each matrix shows four different combinations of true and predicted values: True Positive (1,1), True Negative (0,0), False Positive (0,1), and False Negative (1,0). The number in each quadrant refers to this description (number of patients). The image plane angulations for False Positive patients (0,1) were: RVol = 23 ± 5°, RF = 26 ± 13°, HFR[RVol] = 23 ± 8°, HFR[RF] = 20 ± 7°, DFR[RVol] = 34 ± 16°, DFR[RF] = 35 ± 16°. The image plane angulations for False Negative patients (1,0) were: RVol = 32 ± 3°, RF = 28 ± 10°, HFR[RVol] = 28 ± 5°, HFR[RF] = 28 ± 9°, DFR[RVol] = 27 ± 11°, DFR[RF] = 29 ± 10°. Text tables.
