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MR signal intensity for Hyper-acute blood?
Hyper-acute blood < 3 hours. T1 isointense; T2 bright; Intracellular oxyhemoglobin.
MR Signal intensity for Acute blood?
Acute blood 3 to 24 hours. T1 isointense; T2 dark; Intracellular deoxyhemoglobin.
MR signal intensity for EARLY subacute blood?
EARLY subacute blood 1 to 3 days. T1 bright; T2 dark; Intracellular methemoglobin.