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Regional Kinematics of the Heart: Investigation with Marker Tracking and with Phase Contrast Magnetic Resonance Imaging
Linköping University, Department of Biomedical Engineering.
2003 (English)Independent thesis Basic level (professional degree)Student thesis
Abstract [en]

The pumping performance of the heart is affected by the mechanical properties of the muscle fibre part of the cardiac wall, the myocardium. The myocardium has a complex structure, where muscle fibres have different orientations at different locations, and during the cardiac cycle, the myocardium undergoes large elastic deformations. Hence, myocardial strain pattern is complex. In this thesis work, a computation method for myocardial strain and a detailed map of myocardial transmural strain during the cardiac cycle are found by the use of surgically implanted metallic markers and beads. The strain is characterized in a local cardiac coordinate system. Thereafter, non-invasive phase contrast magnetic resonance imaging (PC-MRI) is used to compare strain at different myocardial regions. The difference in resolution between marker data and PC-MRI data is elucidated and some of the problems associated with the low resolution of PC-MRI are given.

Place, publisher, year, edition, pages
Institutionen för medicinsk teknik , 2003.
Keyword [en]
Biotechnology, strain, tensor, markers, PC-MRI, myocardium
Keyword [sv]
National Category
Industrial Biotechnology
URN: urn:nbn:se:liu:diva-1735ISRN: LITH-IMT/BMS20-EX--03/354--SEOAI: diva2:19061
Available from: 2004-06-21 Created: 2004-06-21

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