Erratum

In the article, “Magnetic Resonance Imaging of Acute Stroke” by Alison E. Baird and Steven Warach, which appeared in the June 1998 issue of the Journal of Cerebral Blood Flow and Metabolism (18:593–609), information presented in Table 2 was incorrect. The corrected table appears below.

TabLE 2.

Signal characteristics and ADC typical at each stroke stage

Stage	T2WI	DWI	ADC
ADC, apparent diffusion coefficient; DWI, diffusion-weighted image; T2WI, T2-weighted image.
Hyperacute (0–6 hours)	Normal	Increased	Decreased
Acute (6–96 hours)	Normal to increased	Increased	Decreased
Subacute (4–10 days)	Increased	Normal to increased	Decreased/normal
Chronic	Increased	Decreased to increased	Increased