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Phase analysis detects heterogeneity of myocardial deformation on cine MRI
Linköping University, Center for Medical Image Science and Visualization (CMIV). Ryhov University Hospital, Sweden; Karolinska University Hospital, Sweden.
Ryhov University Hospital, Sweden.
Linköping University, Department of Medical and Health Sciences, Division of Cardiovascular Medicine. Linköping University, Faculty of Health Sciences. Kalmar University Hospital, Kalmar, Sweden.
Linköping University, Department of Medical and Health Sciences. Linköping University, Faculty of Health Sciences. Region Östergötland, Heart and Medicine Center, Department of Cardiology in Linköping.
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2015 (English)In: Scandinavian Cardiovascular Journal, ISSN 1401-7431, Vol. 49, no 3, 149-158 p.Article in journal (Refereed) Published
Abstract [en]

Abstract Objectives. Myocardial scar will lead to heterogeneous left ventricular deformation. We hypothesized that a myocardial scar will display an elevated standard deviation of phase and that this effect could be compared with mechanical dispersion. Design. Thirty patients (3 women and 27 men) were investigated 4-8 weeks after ST-elevation myocardial infarction treated with percutaneous coronary intervention. Seventeen had a scar area >75% in at least one antero- or inferoseptal segment (scar) and 13 had scar <1% (non-scar). The phase delays of velocity, displacement and strain were measured in the longitudinal direction, tangential to the endocardial outline, and in the radial direction, perpendicular to the tangent. Results. The standard deviation of phase in radial measurements differentiated scar patients from those without scar (p<0.01), while longitudinal measurements did so only for longitudinal strain. Likewise, the standard deviation for radial measurements of time to peak for segmental velocity, displacement and strain performed better than longitudinal measurements and equal to the results of phase. Conclusion. Phase dispersion in deformation imaging may be used for detecting heterogeneous left ventricular contraction.

Place, publisher, year, edition, pages
Informa Healthcare, 2015. Vol. 49, no 3, 149-158 p.
National Category
Cardiac and Cardiovascular Systems
URN: urn:nbn:se:liu:diva-115752DOI: 10.3109/14017431.2015.1023343ISI: 000354402500007PubMedID: 25752486OAI: diva2:796255
Available from: 2015-03-18 Created: 2015-03-18 Last updated: 2015-06-16

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Maret, EvaBrudin, LarsTödt, TimEngvall, Jan
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Center for Medical Image Science and Visualization (CMIV)Division of Cardiovascular MedicineFaculty of Health SciencesDepartment of Medical and Health SciencesDepartment of Cardiology in LinköpingDepartment of Clinical Physiology in Linköping
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Scandinavian Cardiovascular Journal
Cardiac and Cardiovascular Systems

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