The Diagnostic Ability of rs-DWI to Detect Subtle Acute Infarction Lesion in the Different Regions of the Brain and the Comparison between Different b-Values

Table 5

Statistical analysis of the diagnostic ability among b1000, b2000, and b3000.

b values	True Positive	True Negative	False Positive	False Negative	Statistical Analysis (%)
					Sensitivity	Specificity	PPV	NPV
b1000	318	0	20	68	82.3	0	95.7	0
b2000	331	15	5	55	85.7	75	98.5	21.4
b3000	319	12	8	67	82.6	60	97.5	15.1

PPV: positive predictive value; NPV: negative predictive value.