Artifacts reduction in strain maps of tagged magnetic resonance imaging using harmonic phase-Reference-Cited by-同舟云学术

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

Published:2015-01-01 Issue:1 Volume:10 Page:
ISSN:2391-5463
Container-title:Open Medicine
language:
Short-container-title:

Author:

Wang Daolei¹,Fu YaBo²,Aqeel Ashraf Muhammad³

Affiliation:

1. 1Department of Mechanical Engineering, Shanghai University of ElectricPower, 200090 Shanghai, China

2. 2Department of Mechanical Engineering, National University of Singapore, 117576 Singapore

3. 3Faculty of Science & Natural Resources, Universiti Malaysia Sabah 88400 Kota Kinabalu Sabah Malaysia

Abstract

AbstractTagged 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.

Publisher

Walter de Gruyter GmbH

Subject

General Medicine

Link

https://www.degruyter.com/document/doi/10.1515/med-2015-0074/pdf

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