Document Detail

Prospective self-gating for swallowing motion: a feasibility study in carotid artery wall MRI using three-dimensional variable-flip-angle turbo spin-echo.
MedLine Citation:
PMID:  22161627     Owner:  NLM     Status:  MEDLINE    
Three-dimensional black-blood MRI is a promising noninvasive imaging technique for the assessment of atherosclerotic carotid artery disease. However, this technique is inherently susceptible to motion. In particular, swallowing can result in considerable wall motion at the carotid bifurcations, which may induce drastic image degradation or substantial overestimation of wall thickness. Self-gating techniques have previously been shown to be capable of resolving and compensating for cardiac or respiratory motion during MRI. This work presents a self-gating-based prospective motion gating scheme that is combined with a three-dimensional variable-flip-angle turbo spin-echo sequence (SPACE) for detecting swallowing motion. Self-gating signal readouts along the superior-inferior direction during each repetition time period are used to derive the projection profiles of the imaging volume. Based on cross-correlation analysis between the projection profiles and the corresponding reference profiles, swallowing motion can be detected and the motion-contaminated data will subsequently be discarded and reacquired in the next repetition time. The self-gated SPACE sequence was validated on eight healthy volunteers and two patients and, when compared with the conventional SPACE sequence, proved to be more resistant to swallowing motion and significantly improved image quality as well as the sharpness of carotid artery wall boundaries.
Zhaoyang Fan; Sven Zuehlsdorff; Xin Liu; Debiao Li
Related Documents :
22177467 - Afm diagnostics of graphene-based quantum hall devices.
22139127 - Rapid assessment of longitudinal systolic left ventricular function using speckle track...
21719947 - A reconstruction method for equidistant fan beam differential phase contrast computed t...
22028177 - Further support for the alignment of cattle along magnetic field lines: reply to hert e...
16707867 - Accuracy of proximal caries depth measurements: comparison between limited cone beam co...
19204467 - Conventional high-resolution ct versus contiguous multidetector ct in the detection of ...
Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural     Date:  2011-12-09
Journal Detail:
Title:  Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine     Volume:  67     ISSN:  1522-2594     ISO Abbreviation:  Magn Reson Med     Publication Date:  2012 Feb 
Date Detail:
Created Date:  2012-01-24     Completed Date:  2012-07-02     Revised Date:  2014-09-19    
Medline Journal Info:
Nlm Unique ID:  8505245     Medline TA:  Magn Reson Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  490-8     Citation Subset:  IM    
Copyright Information:
Copyright © 2011 Wiley Periodicals, Inc.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Carotid Arteries / anatomy & histology*
Deglutition / physiology*
Feasibility Studies
Image Enhancement / methods*
Image Processing, Computer-Assisted / methods*
Imaging, Three-Dimensional / methods*
Magnetic Resonance Angiography / methods*
Muscle, Smooth, Vascular / anatomy & histology*
Phantoms, Imaging
Young Adult
Grant Support

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Therapeutic Management of Advanced Adrenocortical Carcinoma: What Do We Know in 2011?
Next Document:  Identification of a 21 amino-acid peptide conferring 3-hydroxypropionic acid stress-tolerance to Esc...