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FIG 1. Patient 1, a 22-year-old woman who was admitted to the hospital for sudden dysarthria and numbness of the right hand and ensuing right hemiparesis.
A, Fast fluid-attenuated inversion recovery image (9000/110/2 [TR/TE/NEX]; inversion time, 2200 ms) obtained 1 day after symptom onset.
B, Fast fluid-attenuated inversion recovery image (9000/110/2; inversion time, 2200 ms) obtained 10 days after symptom onset. Left deep white matter lesion shows slight increase in size between initial images and those obtained 10 days after symptom onset.
C, Fast fluid-attenuated inversion recovery image (9000/110/2; inversion time, 2200 ms) obtained 20 days after symptom onset.
D, Fast fluid-attenuated inversion recovery image (9000/110//2; inversion time, 2200 ms) obtained 90 days after symptom onset. Significant size reduction can be seen on final images.
E, ADC map obtained 1 day after symptom onset shows signal drop within the lesion.
F, ADC map obtained 10 days after symptom onset shows signal drop within the lesion.
G, ADC map obtained 20 days after symptom onset shows an almost isointense signal.
H, ADC map obtained 90 days after symptom onset shows an increased signal intensity.
I, Initial proton spectrum obtained from lesion (spin-echo, 1600/135/256). Baseline examination shows slight decrease in NAA and a peak attributed to lactate (Lac). Cho, choline.
J, Final proton spectrum obtained from lesion (spin-echo, 1600/135/256). Final examination shows increase in choline (Cho), and lactate peak is not present.
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