. Author manuscript; available in PMC: 2013 Jun 1.

Published in final edited form as: J Magn Reson Imaging. 2012 Jan 13;35(6):1338–1348. doi: 10.1002/jmri.23577

Table 4.

Specificity, Sensitivity, and Area-Under-the-Curve (AUC) based on ROC analysis for IE and SIR at end-systole and end-diastole.

	Ischemic Extent (IE)		Segment-Intensity Response (SIR)
	End-Systole	End-Diastole	End-Systole	End-Diastole
Optimal Cutoff	IE ≥ 2.1	IE ≥ 1.4	SIR ≤ 0.93	SIR ≤ 0.98
AUC/SE^*	0.97/0.03 ^†	0.88/0.1^‡	0.83/0.10^†	0.47/0.17^‡
Specificity	100%	85.7%	87.5%	42.8%
Sensitivity	87.5%	83.3%	77%	83.3%

AUC: Area-Under-the-Curve/SE: Standard-Error of AUC metric (23).

^†

Statistically significant difference in AUC between IE and SIR (z=1.68; p-value=0.045)

^‡

Statistically significant difference in AUC between IE and SIR (z=1.76; p-value=0.0388)