Subarachnoid hemorrhage MRI: Difference between revisions

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Revision as of 02:48, 13 December 2016

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-In-Chief: Cafer Zorkun, M.D., Ph.D. [2]; Sara Mehrsefat, M.D. [3]

Overview

MRI

MRI may indicated in patients with subarachnoid hemorrhage if no lesion were found on prior angiography. Disadvantage of performing MRI in patients with subarachnoid hemorrhage may include:

Higher cost
Lower availability
Longer study time make it less optimal for detecting SAH. In addition
Not being sensitive for detection of subarachnoid hemorrhage within the first 48 hours

T2- and T2*-weighted images can potentially demonstrate SAH as low signal intensity in normally high-signal subarachnoid spaces. On T1-weighted images, acute SAH may appear as intermediate- or high-intensity signal in the subarachnoid space

References

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@@ Line 1: / Line 1: @@
 __NOTOC__
 {{Subarachnoid hemorrhage}}
-{{CMG}}; '''Associate Editor(s)-In-Chief:''' {{CZ}}
+{{CMG}}; '''Associate Editor(s)-In-Chief:''' {{CZ}}; {{SaraM}}
+==Overview==
 ==  MRI ==
-*Fluid-attenuated inversion recovery (FLAIR) is the most sensitive MRI pulse sequence for the detection of SAH. SAH appears as high-intensity signal in normally low signal CSF spaces.
+MRI may indicated in patients with subarachnoid hemorrhage if no lesion were found on prior angiography.
-*T2- and T2*-weighted images can potentially demonstrate SAH as low signal intensity in normally high-signal subarachnoid spaces
+Disadvantage of performing MRI in patients with subarachnoid hemorrhage may include:
-*On T1-weighted images, acute SAH may appear as intermediate- or high-intensity signal in the subarachnoid space
+*Higher cost
-*MR angiography may be useful in the evaluation of [[aneurysm]]s and other vascular lesions that cause SAH
+*Lower availability
-Indications for magnetic resonance angiography in aSAH are still few because of limitations such as
+*Longer study time make it less optimal for detecting SAH. In addition
-*Difficulty in scanning acutely ill patients
+*Not being sensitive for detection of subarachnoid hemorrhage within the first 48 hours
-*predisposition to motion artifact
+T2- and T2*-weighted images can potentially demonstrate SAH as low signal intensity in normally high-signal subarachnoid spaces. On T1-weighted images, acute SAH may appear as intermediate- or high-intensity signal in the subarachnoid space
-*Patient compliance
-*Longer study time
-*Cost
 ==References==

Subarachnoid hemorrhage MRI: Difference between revisions

Revision as of 02:48, 13 December 2016

Overview

MRI

References

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