Aging of stroke

Time	DWI	ADC	T2	CT
30 mins	First becomes visible - bright	First starts to become visible – dark – in animal stroke models ADC changes visible in < 5 mins	Invisible	invisible
6-8 hours	Clearly Bright	Clearly Dark	First starts to become visible – bright (edema)	First start to become visible - loss of grey-white, insular ribbon, etc
24 hours	Clearly Bright	Clearly Dark	Clearly bright	Clearly dark
1-4 days	Clearly Bright	Max darkness	Clearly bright	Clearly dark
7 days	Max brightness	Clearly dark	Clearly bright	Clearly dark
10-15 days	Signal starts to fade	Reverses from dark to bright, sometimes becomes invisible	Clearly bright	Clearly dark
2-3 weeks	Signal fading/reversing	Becomes bright	Clearly bright	Clearly dark
>30 days	Dark	bright	Max brightness	Clearly dark