Artifacts reduction in strain maps of tagged magnetic resonance imaging using harmonic phase

• Authors: Daolei Wang , YaBo Fu , Muhammad Aqeel Ashraf
• Languages of publication: EN

Abstracts

EN

Tagged Magnetic Resonance Imaging (MRI) is a noninvasive technique for examining myocardial function and deformation. Tagged MRI can also be used in quasistatic MR elastography to acquire strain maps of other biological soft tissues. Harmonic phase (HARP) provides automatic and rapid analysis of tagged MR images for the quantification and visualization of myocardial strain. We propose a new artifact reduction method in strain maps. Image intensity of the DC component is estimated and subtracted from spatial modulation of magnetization (SPAMM) tagged MR images. DC peak interference in harmonic phase extraction is greatly reduced after DC component subtraction. The proposed method is validated using both simulated and MR acquired tagged images. Strain maps are obtained with better accuracy and smoothness after DC component subtraction.

Keywords

EN

Image Processing; Artifacts Reduction; Strain Analysis; Tagged MRI; Medical Image

• Publisher: De Gruyter Open
• Journal: Open Medicine
• Year: 2014
• Volume: 10
• Issue: 1

Dates

published

1 - 1 - 2015

received

10 - 7 - 2015

accepted

15 - 10 - 2015

online

17 - 12 - 2015

Contributors

author

Daolei Wang

• Department of Mechanical Engineering, Shanghai University of ElectricPower, 200090 Shanghai, China

author

YaBo Fu

• Department of Mechanical Engineering, National University of Singapore, 117576 Singapore

author

Muhammad Aqeel Ashraf

• Faculty of Science & Natural Resources, Universiti Malaysia Sabah 88400 Kota Kinabalu Sabah Malaysia

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Identifiers

DOI

10.1515/med-2015-0074