MRI in intracerebral hemorrhage

There has been a widespread belief that conventional MRI is less sensitive than CT in the detection of intracerebral hemorrhage. Much of this pessimism is based on a number of early trials using MR scanners with low field strengths. However, there is increasing evidence that echoplanar gradient-echo T2*-weighted imaging, also termed susceptibility
weighted imaging, is reliable in the detection of acute intraparenchymal hemorrhage. In addition, fluid-attenuated inversion recovery (FLAIR) imaging may detect subarachnoid hemorrhage. However, until large randomized controlled trials confirm the ability of MRI to detect intraparenchymal and subarachnoid hemorrhage, a screening CT must be considered in all stroke patients. The expense of any screening CT must be added to the
cost of performing MRI.

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