. 2016 Nov 28;8(11):887–894. doi: 10.4329/wjr.v8.i11.887

Table 2.

Concordance between CO₂BOLD and positron emission tomography/single photon emission computed tomography

	PET/SPECT pathologic	PET/SPECT normal
CO₂BOLD pathologic	6	4	PPV 60%
CO₂BOLD pathologic	TP 43%	FP 29%	PPV 60%
CO₂BOLD normal	1	3	NPV 75%
CO₂BOLD normal	FN 7%	TN 21%	NPV 75%
	SENS 86%	SPEC 43%	ACC 64%

TP: True positive; TN: True negative; FP: False positive; FN: False negative; SENS: Sensitivity; SPEC: Specificity; PPV: Positive predictive value; NPV: Negative predictive value; ACC: Accuracy; PET: Positron emission tomography; SPECT: Single photon emission computed tomography.