-
Increased Signal on T1WI
- Fat
- High Protein
- Subacute Hemorrhage (Methemoglobin)
- Gadolinium
- Other Paramagnetics (Manganese, Calcium, Melanin)
-
Decreased Signal on T1WI
- Water (CSF, Edema)
- Acute Hemorrhage (Oxyhemoglobin, Deoxyhemoglobin)
- Chronic Hemorrhage (Hemosiderin)
- Diamagnetic Effects (Calcification, Air)
- Fast Blood Flow
- Very Viscous Protein
-
Increased Signal on T2WI
- Water (CSF, Edema)
- Hyperacute Hemorrhage (Oxyhemoglobin)
- Late Subacute Hemorrhage (Extracellular Methemoglobin)
-
Decreased Signal on T2WI
- Fat (NON-FSE)
- High Protein
- Acute Hemorrhage (Deoxyhemoglobin)
- Chronic Hemorrhage (Hemosiderin)
- Early Subacute Hemorrhage (Intracellular Methemoglobin)
- Other Paramagnetics (Melanin, Calcium)
- Diamagnetic Effects (Calcification, Air)
- Fast Blood Flow
-
MR Signal of Hemorrhage
- �IT BE AN IDY BIDY BABY DODO�
- Oxyhemoglobin IB (Iso T1, Bright T2)
- Deoxyhemoglobin ID (Iso T1, Dark T2)
- Intracellular Methemoglobin BD (Bright T1, Dark T2)
- Extrecellular Methemoglobin BB (Bright T1, Bright T2)
- Hemosiderin DD (Dark T1, Dark T2)
-
Intracerebral Hemorrhage
- Trauma (Increased edema)
- Infarction (Increased edema)
- Primary Neoplasm/Mets (Increased edema)
- Hypertension (basal ganglia, cerebellum, brainstem)
- Amyloid Angiopathy (elderly)
- Aneurysm
- AVM
- Vasculitis
- Dural Sinus Thrombosis
- Bleeding Diatheses
- Cavernous Hemangioma
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