The Open Neuroimaging Journal




ISSN: 1874-4400 ― Volume 12, 2018

Restricted Diffusion in the Splenium of the Corpus Callosum After Cardiac Arrest



Matt T Bianchi1, John R Sims*, 2
1 Department of Neurology, Massachusetts General Hospital and Brigham and Women’s Hospital, Fruit Street, Wang Ambulatory Center 8th Floor, Boston, MA 02114, USA
2 Departments of Neurology and Radiology, Massachusetts General Hospital, CNY49 Rm6403, Charlestown, MA 02129, USA

Abstract

The value of MRI findings for coma prognostication is a question of great clinical and pathological relevance. We describe MRI evidence of restricted diffusion in the splenium in 5 patients with coma after cardiopulmonary resuscitation following cardiac arrest. The most common clinical presentation of corpus callosum lesions (of any cause) is altered mental status, consistent with the global importance of these extensive inter-hemispheric fibers. In our four cases with bilateral splenium restricted diffusion, none of the patients recovered consciousness. One patient with a unilateral (likely embolic) restricted diffusion lesion had excellent recovery. In contrast to unilateral ischemic callosal lesions, we believe that generalized, midline splenium restricted diffusion occurring after cardiopulmonary arrest represents Wallerian degeneration of interhemispheric neurons rather than direct ischemic damage to the white matter or axons of the callosum and thus will likely portend a poor prognosis.



Article Information


Identifiers and Pagination:

Year: 2008
Volume: 2
First Page: 1
Last Page: 4
Publisher Id: TONIJ-2-1
DOI: 10.2174/1874440000802010001
PMID: 19018311
PMCID: PMC2577938

Article History:

Received Date: 26/10/2007
Revision Received Date: 10/12/2007
Acceptance Date: 20/12/2007
Electronic publication date: 11/1/2008
Collection year: 2008

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2008 Bentham Science Publishers Ltd

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.5/), which permits unrestrictive use, distribution, and reproduction in any medium, provided the original work is properly cited.


* Address correspondence to this author at the Departments of Neurology and Radiology, Massachusetts General Hospital, CNY49 Rm6403, Charlestown, MA 02129, USA E-mail: jsims@partners.org


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