Embodetect Study Group
Imaging as an aid in understanding stroke etiology
Stroke is the leading cause of long-term disability, the second-leading cause of death, and a major consumer of healthcare resources worldwide. Embolism of cardiac origin is thought to account for around one fifth of ischemic strokes. Approximately 20–25% of all strokes are recurrent and the risk of recurrence can be reduced with early initiation of appropriate secondary prevention. Ischemic strokes without a well-defined etiology are labeled as cryptogenic, and account for 30–40% of all ischemic strokes.
Etiological work-up of stroke/transient ischemic attack (TIA) usually includes the parallel use of several imaging modalities that may be time-consuming and expensive when performed in separate sessions.
Our study group investigates whether combined examination of the heart, aorta, and cervicocranial arteries with CT may improve the diagnosis of stroke etiology.
Most cardiac thrombi originate from the left atrial appendage (LAA). An enlarged LAA may predispose to blood coagulation due to slow flow velocity. The study also aims to assess whether LAA and/or left atrium volumetry is helpful in risk stratifications in patients with cryptogenic stroke.
We also investigate the role of inflammation markers and increased visceral fat, intrathoracic fat and pericardial fat in stroke pathogenesis.
Cooperation
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- Antti Muuronen, MD / Junior Researcher
Visceral adipose tissue and inflammation markers
Antti.Muuronen ( at ) kuh.fi - Miika Korhonen, BM M.Sc.(Tech.) / Junior Researcher
Left atrial appendage morphology and automatized segmentation
Miika.Korhonen ( at ) kuh.fi - Juha Onatsu, MD / Neurologist
Clinical perspectives and fife-year follow-up
Juha.Onatsu ( at ) kuh.fi
- Antti Muuronen, MD / Junior Researcher
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- Left atrial appendage volume in acute stroke.
Taina, Mikko.
University of Eastern Finland, 2014.
Publications of the University of Eastern Finland. Dissertations in Health Sciences, 243.
- Left atrial appendage volume in acute stroke.
Keywords
Professors
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Marja Hedman
ProfessorInstitute of Clinical Medicine, School of Medicine, Faculty of Health Sciences -
Pekka Jäkälä
ProfessorInstitute of Clinical Medicine, School of Medicine, Faculty of Health Sciences
Other group members
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Pirjo Mustonen, Adjunct Professor (KUH) [email protected]
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Sakari Simula, Senior Researcher [email protected]
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Kari Pulkki, Professor [email protected]
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Petri Sipola, Adjunct Professor (KUH) [email protected]
Publications
15 items-
Determinants of left atrial appendage volume in stroke patients without chronic atrial fibrillation
Taina M, Sipola P, Muuronen A, Hedman M, Mustonen P, Kantanen AM, Jäkälä P, Vanninen R. 2014. PLoS ONE. 9: e90903 A1 Journal article (refereed), original research -
Morphological and volumetric analysis of left atrial appendage and left atrium: cardiac computed tomography-based reproducibility assessment
Taina Mikko, Korhonen Miika, Haataja Mika, Muuronen Antti, Arponen Otso, Hedman Marja, Jäkälä Pekka, Sipola Petri, Mustonen Pirjo, Vanninen Ritva. 2014. PLoS ONE. 9: e101580 A1 Journal article (refereed), original research -
Computed tomography and echocardiography together reveal more high-risk findings than echocardiography alone in the diagnostics of stroke etiology
Sipola Petri, Hedman Marja, Onatsu Juha, Turpeinen Anu, Halinen Matti, Jäkälä Pekka, Vanninen Ritva. 2013. Cerebrovascular diseases. 35: 521-530 A1 Journal article (refereed), original research -
Effect of middle cerebral artery territory ischemic stroke on QT interval
Simula Sakari, Muuronen Antti T, Taina Mikko, Jäkälä Pekka, Sipola Petri, Vanninen Ritva, Hedman Marja. 2013. Journal of stroke and cerebrovascular diseases. [Epub ahead of print]: 1-7 A1 Journal article (refereed), original research -
Left atrial appendage volume increased in more than half of patients with cryptogenic stroke
Taina M, Vanninen R, Hedman M, Jäkälä P, Kärkkäinen S, Tapiola T, Sipola P. 2013. PLoS ONE. 8: e79519 A1 Journal article (refereed), original research -
Prevalence of pulmonary embolism in patients with suspected cardioembolic ischemic stroke
Sipola P, Hedman M, Jäkälä P, Karjalainen AM, Peuhkurinen K, Manninen H, Vanninen R. 2011. Journal of thoracic imaging. 26: 32-35 A1 Journal article (refereed), original research -
Carotid stenosis degree in CT angiography: assessment based on luminal area versus luminal diameter measurements
Zhang Z, Berg M, Ikonen A, Könönen M, Kälviäinen R, Manninen H, Vanninen R, Könönen M. 2005. European radiology. 15: 2359-2365 A1 Journal article (refereed), original research -
Multi-detector row CT angiography in the assessment of carotid artery disease in the symtomatic patients: comparison with rotaional angiography and digital subtraction angiography
Berg M, Zhang Z, Ikonen A, Sipola P, Kälviäinen R, Manninen H, Vanninen R. 2005. American journal of neuroradiology. 26: 1022-1034 A1 Journal article (refereed), original research -
Carotid artery stenosis: reproductibility of automated 3D CT angiography analysis method
Zhang Z, Berg MH, Ikonen AEJ, Vanninen RL, Manninen HI. 2004. European radiology. 14: 665-672 A1 Journal article (refereed), original research -
Apolipoprotein E polymorphism and acute ischemic stroke : a diffusion - and perfusion weighted magnetic resonance imaging study
Liu Y, Laakso MP, Karonen JO, Vanninen RL, Nuutinen J, Soimakallio S, Aronen HJ. 2002. Journal of cerebral blood flow and metabolism. : 1336-1342 A1 Journal article (refereed), original research