No part of this publication may be translated into other languages, reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, microcopying, or by any information storage and retrieval system, without permission in writing from the publisher.Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. Subacute cerebellar infarcts may be missed on imaging due to a phenomenon called “fogging.”Ĭopyright / Drug Dosage / DisclaimerCopyright: All rights reserved. Small infarcts typically affect the cortex and often present as incidental cavities. Anterior inferior cerebellar artery-infarcts can be mistaken for lateral PICA-infarcts. The PICA supplies at least the medial part of the posterior cerebellar surface. The posterior inferior cerebellar artery (PICA)-territories can be visualised with super-selective territorial ASL MRI. Key Messages: MRI is the modality of choice for diagnosing cerebellar infarction. Similar to large cerebellar infarcts, recent studies investigating volumetric MRI datasets have now shown that small cerebellar infarcts occur in typical spatial patterns, knowledge of which may help in the diagnosis of even the smallest of cerebellar infarcts on MRI. Then, we review the arterial cerebellar perfusion territories recently made visible with territorial arterial spin labeling (ASL), followed by a discussion and illustration of the MRI appearance of cerebellar infarcts in different stages. Summary: We first briefly review the clinical presentation of cerebellar infarctions, followed by a short refresher on cerebellar anatomy and pathophysiological mechanisms of cerebellar infarcts. With adequate recognition of cerebellar infarction on MRI and prompt initiation or optimisation of preventive therapeutic measures, more dramatic strokes may be avoided in selected cases. Because of few or atypical clinical symptoms and a relatively low sensitivity of CT scans, many cerebellar infarctions may be detected only with MRI. Background: MRI is the imaging modality of choice for diagnosing brain infarction.
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