| Three-point Dixon method enables whole-body water and fat imaging of obese subjects. | |
| | |
MedLine Citation:
|
PMID: 20512869 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Dixon imaging techniques derive chemical shift-separated water and fat images, enabling the quantification of fat content and forming an alternative to fat suppression. Whole-body Dixon imaging is of interest in studies of obesity and the metabolic syndrome, and possibly in oncology. A three-point Dixon method is proposed where two solutions are found analytically in each voxel. The true solution is identified by a multiseed three-dimensional region-growing scheme with a dynamic path, allowing confident regions to be solved before unconfident regions, such as background noise. 2 pi-Phase unwrapping is not required. Whole-body datasets (256 x 184 x 252 voxels) were collected from 39 subjects (body mass index 19.8-45.4 kg/m(2)), in a mean scan time of 5 min 15 sec. Water and fat images were reconstructed offline, using the proposed method and two reference methods. The resulting images were subjectively graded on a four-grade scale by two radiologists, blinded to the method used. The proposed method was found superior to the reference methods. It exclusively received the two highest grades, implying that only mild reconstruction failures were found. The computation time for a whole-body dataset was 1 min 51.5 sec +/- 3.0 sec. It was concluded that whole-body water and fat imaging is feasible even for obese subjects, using the proposed method. |
| | |
Authors:
|
Johan Berglund; Lars Johansson; Håkan Ahlström; Joel Kullberg |
Related Documents
:
|
15581169 - Use of liquid-based cytology in serous fluids: a comparison with conventional cytoprepa... 12445589 - Predictors of vulnerability to reduced body image satisfaction and psychological wellbe... 3362059 - A simple high-frequency antenna for nmr imaging. 20967669 - Differential gaze behavior towards sexually preferred and non-preferred human figures. 20493769 - A longitudinal study about the body image and psychosocial adjustment of breast cancer ... 6166599 - Religious symbols in dreams of analytical patients. 12088029 - Machine vision guided sensor positioning system for leaf temperature assessment. 20610159 - Microfluidic approach for fast labeling optimization and dose-on-demand implementation. 17472359 - Comparing silac and two-dimensional gel electrophoresis image analysis for profiling ur... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine Volume: 63 ISSN: 1522-2594 ISO Abbreviation: Magn Reson Med Publication Date: 2010 Jun |
Date Detail:
|
Created Date: 2010-05-31 Completed Date: 2010-09-23 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 8505245 Medline TA: Magn Reson Med Country: United States |
Other Details:
|
Languages: eng Pagination: 1659-68 Citation Subset: IM |
Copyright Information:
|
(c) 2010 Wiley-Liss, Inc. |
Affiliation:
|
Department of Radiology, Uppsala University Hospital, Uppsala, Sweden. johan.berglund@radiol.uu.se |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adipose Tissue
/
radiography* Adult Body Mass Index Body Water / radiography* Female Humans Image Processing, Computer-Assisted* / methods Male Middle Aged Monte Carlo Method Obesity* / radiography Reproducibility of Results Young Adult |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Fast inversion recovery magnetic resonance angiography of the intracranial arteries.
Next Document: Spatially resolved assessment of serotonin-induced bronchoconstrictive responses in the rat lung usi...