TABLE 1:

Volumes of abnormality expressed as percentages of the lesion on T2-weighted imaging

Finding	Grade III	Grade IV	P Value
Contrast enhancing	9.8 ± 12.3	32.7 ± 18.5	<.01
No decrease in signal intensity	7.6 ± 10.7	21.6 ± 22.7	<.02
Abnormal peak height	13.0 ± 10.0	24.9 ± 15.8	<.01
Abnormal recovery	10.1 ± 16.7	22.7 ± 16.9	<.001