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Table 1 Relative signal intensities for different types of cerebral hemorrhage (adapted from Gomori et al [11])

From: Age determination of vessel wall hematoma in spontaneous cervical artery dissection: A multi-sequence 3T Cardiovascular Magnetic resonance study

Type of Hemorrhage T1 w T2 w Histology
Hyperacute - Intracellular oxyhemoglobin
Acute ↓ or - Intracellular deoxyhemoglobin
Early subacute Intracellular methemoglobin
Late subacute Extracellular methemoglobin
Chronic Hemosiderin
  1. All signal intensities relative to the normal carotid wall
  2. ↓ hypointense
  3. ↑ hyperintens
  4. - isointens