Table 1.

Pixel Fractions within the Normal–Abnormal Boundary ROIs That Were Misassigned Due to Partial-Volume Effect (Group 1, n = 6) at 30 min postischemia

	(a) Abnormal	(b) In-between	(c) Normal	(d) Total to		(e) In-between to		(f) Normal, to
				Abnormal	Normal + in-between	Abnormal	Normal	Abnormal	In-between
ADC	0.32	0.50	0.18	0.30	0.03	0.52	0.03	0.21	0.57
CBF	0.16	0.34	0.50	0.24	0.05	0.44	0.15	0.18	0.41

Note. The two partitions that defined the normal, in-between, and abnormal pixels were, respectively, 0.69 × 10⁻³ and 0.53 × 10⁻³ mm²/sec for ADC and 0.3 and 0.7 mL/g/min for CBF (see Methods). There were ≈3000 HR pixels analyzed for ADC and ≈2000 HR pixels for CBF for all six animals. Pixel fractions of columns a–d are with respect to the total pixels, column e is with respect to the number of in-between pixels (b), and column f is with respect to the number of normal pixels (c).