Diagnostic Criteria of Hemorrhage in MRI of the Brain

18th Edition (August 5, 2011)

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Diagnostic Criteria of Hemorrhage in MRI of the Brain

Written by G. Firman MD

Monday, 23 February 2009 18:28

	Age	T1 Weighted	T2 Weighted
Hyperacute	Hours old, mainly oxyhemoglobin with surrounding edema	Hypointense	Hyperintense
Acute	Days old, mainly deoxyhemoglobin with surrounding edema	Hypointense	Hypointense, surrounded by hyperintense margin
Subacute	Weeks old, mainly methemoglobin	Hyperintense	Hypointense, early subacute with predominantly intracellular methemoglobin. Hyperintense, late subacute with predominantly extracellular methemoglobin
Chronic	Years old, hemosiderin slit or hemosiderin margin surrounding fluid cavity	Hypointense	Hypointense slit, or hypointense margin surrounding hyperintense fluid cavity

References:

Culebras A, Kase CS, Masdeu JC, Fox AJ, Bryan RN, Grossman CB, Lee DH, Adams HP, Thies W. Practice guidelines for the use of imaging in transient ischemic attacks and acute stroke. A report of the Stroke Council, American Heart Association. Stroke. 1997 Jul;28(7):1480-97. [Medline]

Created: April 19, 2005

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Monday 25 February 2013, 07:57