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Susceptibility weighted imaging in acute cerebral ischemia: review of emerging technical concepts and clinical applications.

Abstract Susceptibility weighted imaging (SWI) is an essential magnetic resonance imaging sequence in the assessment of acute ischemic stroke. In this article, we discuss the physics principals and clinical application of conventional SWI and multi-echo SWI sequences. We review the research evidence and practical approach of SWI in acute ischemic stroke by focusing on the detection and characterization of thromboembolism in the cerebral circulation. In addition, we discuss the role of SWI in the assessment of neuroparenchyma by depiction of asymmetric hypointense cortical veins in the ischemic territory (surrogate tissue perfusion), detection of existing microbleeds before stroke treatment and monitoring for hemorrhagic transformation post-treatment. In conclusion, the SWI sequence complements other parameters in the stroke magnetic resonance imaging protocol and understanding of the research evidence is vital for practising stroke neurologists and neuroradiologists.
PMID
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Authors

Mayor MeshTerms

Magnetic Resonance Imaging

Keywords

Magnetic resonance imaging

acute stroke

susceptibility weighted imaging

Journal Title the neuroradiology journal
Publication Year Start




PMID- 28424015
OWN - NLM
STAT- MEDLINE
DA  - 20170420
DCOM- 20170501
LR  - 20170501
IS  - 2385-1996 (Electronic)
IS  - 1971-4009 (Linking)
VI  - 30
IP  - 2
DP  - 2017 Apr
TI  - Susceptibility weighted imaging in acute cerebral ischemia: review of emerging
      technical concepts and clinical applications.
PG  - 109-119
LID - 10.1177/1971400917690166 [doi]
AB  - Susceptibility weighted imaging (SWI) is an essential magnetic resonance imaging 
      sequence in the assessment of acute ischemic stroke. In this article, we discuss 
      the physics principals and clinical application of conventional SWI and
      multi-echo SWI sequences. We review the research evidence and practical approach 
      of SWI in acute ischemic stroke by focusing on the detection and characterization
      of thromboembolism in the cerebral circulation. In addition, we discuss the role 
      of SWI in the assessment of neuroparenchyma by depiction of asymmetric
      hypointense cortical veins in the ischemic territory (surrogate tissue
      perfusion), detection of existing microbleeds before stroke treatment and
      monitoring for hemorrhagic transformation post-treatment. In conclusion, the SWI 
      sequence complements other parameters in the stroke magnetic resonance imaging
      protocol and understanding of the research evidence is vital for practising
      stroke neurologists and neuroradiologists.
FAU - Hsu, Charlie Chia-Tsong
AU  - Hsu CC
AD  - 1 Department of Medical Imaging, Princess Alexandra Hospital, Australia.
AD  - 2 Department of Medical Imaging, University of Toronto, Toronto, Ontario, Canada.
FAU - Kwan, Gigi Nga Chi
AU  - Kwan GNC
AD  - 1 Department of Medical Imaging, Princess Alexandra Hospital, Australia.
FAU - Hapugoda, Sachintha
AU  - Hapugoda S
AD  - 1 Department of Medical Imaging, Princess Alexandra Hospital, Australia.
FAU - Craigie, Michelle
AU  - Craigie M
AD  - 1 Department of Medical Imaging, Princess Alexandra Hospital, Australia.
FAU - Watkins, Trevor William
AU  - Watkins TW
AD  - 1 Department of Medical Imaging, Princess Alexandra Hospital, Australia.
FAU - Haacke, E Mark
AU  - Haacke EM
AD  - 3 Departments of Radiology and Biomedical Engineering, Wayne State University,
      USA.
LA  - eng
PT  - Journal Article
PT  - Review
DEP - 20170101
PL  - United States
TA  - Neuroradiol J
JT  - The neuroradiology journal
JID - 101295103
SB  - IM
MH  - Brain Ischemia/*diagnostic imaging/*physiopathology
MH  - Cerebral Infarction
MH  - Cerebrovascular Circulation/*physiology
MH  - Humans
MH  - Image Processing, Computer-Assisted
MH  - *Magnetic Resonance Imaging
OTO - NOTNLM
OT  - *Magnetic resonance imaging
OT  - *acute stroke
OT  - *susceptibility weighted imaging
EDAT- 2017/04/21 06:00
MHDA- 2017/05/02 06:00
CRDT- 2017/04/21 06:00
AID - 10.1177/1971400917690166 [doi]
PST - ppublish
SO  - Neuroradiol J. 2017 Apr;30(2):109-119. doi: 10.1177/1971400917690166. Epub 2017
      Jan 1.

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