| Free-breathing cardiac MR with a fixed navigator efficiency using adaptive gating window size. | |
| | |
MedLine Citation:
|
PMID: 22367715 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
A respiratory navigator with a fixed acceptance gating window is commonly used to reduce respiratory motion artifacts in cardiac MR. This approach prolongs the scan time and occasionally yields an incomplete dataset due to respiratory drifts. To address this issue, we propose an adaptive gating window approach in which the size and position of the gating window are changed adaptively during the acquisition based on the individual's breathing pattern. The adaptive gating window tracks the breathing pattern of the subject throughout the scan and adapts the size and position of the gating window such that the gating efficiency is always fixed at a constant value. To investigate the image quality and acquisition time, free breathing cardiac MRI, including both targeted coronary MRI and late gadolinium enhancement imaging, was performed in 67 subjects using the proposed navigator technique. Targeted coronary MRI was acquired from eleven healthy adult subjects using both the conventional and proposed adaptive gating window techniques. Fifty-six patients referred for cardiac MRI were also imaged using late gadolinium enhancement with the proposed adaptive gating window technique. Subjective and objective image assessments were used to evaluate the proposed method. The results demonstrate that the proposed technique allows free-breathing cardiac MRI in a relatively fixed time without compromising imaging quality due to respiratory motion artifacts. Magn Reson Med, 2012. © 2012 Wiley Periodicals, Inc. |
| | |
Authors:
|
Mehdi H Moghari; Raymond H Chan; Susie N Hong; Jaime L Shaw; Lois A Goepfert; Kraig V Kissinger; Beth Goddu; Mark E Josephson; Warren J Manning; Reza Nezafat |
Related Documents
:
|
7770235 - Frequency of false-positive septal defects on adenosine/201t1 images in patients with l... 7721545 - Evaluation of myocardial motion tracking with cine-phase contrast magnetic resonance im... 11804925 - Calcium scoring of the coronary artery by electron beam ct: how to apply an individual ... 1570975 - Magnetic resonance imaging of the brain before and after open heart operations. 10540655 - Acute stroke: improved nonenhanced ct detection--benefits of soft-copy interpretation b... 23751835 - Imaging findings of inflammatory pseudotumor-like follicular dendritic cell tumor of sp... |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2012-2-24 |
Journal Detail:
|
Title: Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine Volume: - ISSN: 1522-2594 ISO Abbreviation: - Publication Date: 2012 Feb |
Date Detail:
|
Created Date: 2012-2-27 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 8505245 Medline TA: Magn Reson Med Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
|
Copyright © 2012 Wiley Periodicals, Inc. |
Affiliation:
|
Department of Medicine, Cardiovascular Division, Harvard Medical School and Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Pluripotent Stem Cell Model Reveals Essential Roles for miR-450b-5p and miR-184 in Embryonic Corneal...
Next Document: Reducing methane emissions and the methanogen population in the rumen of Tibetan sheep by dietary su...