TABLE 1:

History, CT (or other imaging) timing/findings, DW MR timing, and outcome

Age/Gender	Brief history	Time of EEG after insult and findings	Time of CT/other imaging after inciting event and finding	Time of DW MR (days)	Outcome after support withdrawn
#1	Apneic episode during surgery, resuscitated.	1 day: burst suppression	CT: 4–5 hours, No significant abnormality.	3 days	BD
52/M	Apneic episode during surgery, resuscitated.	3 days: low voltage with diffuse slowing	CT: 4–5 hours, No significant abnormality.
		4 days: electrocerebral silence
#2	Cardiac arrest, hypokalemia, resuscitated.	2 days: electrocerebral silence	None performed.	1.5 days	BD
44/F	Cardiac arrest, hypokalemia, resuscitated.	2 days: electrocerebral silence
#3	Presumed head trauma & cardiac arrest, resuscitated	None performed	CT: less than 2 hours, Small amount of SAH in sylvian fissure	1.5 days	BD
34/F	Presumed head trauma & cardiac arrest, resuscitated
			NMBF: 4 days, no intracranial perfusion
#4	Acute intestinal bleed, hypovolemia, apnea, asystole, resuscitated	None performed	None performed	5 days	PVS
56/M
#5	Hanging/suicide with cerebral hypoperfusion	7 days: slow spike & periodic burst suppression	CT: within 2 hours, no significant abnormality	2 days	PVS
41/M	Hanging/suicide with cerebral hypoperfusion	7 days: slow spike & periodic burst suppression	CT: within 2 hours, no significant abnormality
#6	Cardiac arrest, resuscitated	3 days: electrocerebral silence	CT: within 4 hours, no significant abnormality	3 days	BD
40/M		3 days: electrocerebral silence	CT: within 4 hours, no significant abnormality

Note.—DW indicates diffusion-weighted; NMBF, nuclear medicine blood flow study; SAH, subarachnoid hemorrhage; BD, Brain Death; PVS, permanent vegetative state.