| Variable-density parallel imaging with partially localized coil sensitivities. | |
| | |
MedLine Citation:
|
PMID: 20236876 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Partially parallel imaging with localized sensitivities is a fast parallel image reconstruction method for both Cartesian and non-Cartesian trajectories, but suffers from aliasing artifacts when there are deviations from the assumption of perfect localization. Such reconstructions would normally crop the individual coil images to remove the artifacts prior to combination. However, the sampling densities in variable-density k-space trajectories support different field-of-views for separate regions in k -space. In fact, the higher sampling density of low frequencies can be used to reconstruct a bigger field-of-view without introducing aliasing artifacts and the resulting image signal-to-noise ratio (SNR) can be improved. A novel, fast variable-density parallel imaging method is presented, which reconstructs different field-of-views from separate frequencies according to the local sampling density in k-space. Aliasing-suppressed images can be produced with high SNR-efficiency without the need for accurate estimation of coil sensitivities and complex or iterative computations. |
| | |
Authors:
|
Tolga Cukur; Juan M Santos; John M Pauly; Dwight G Nishimura |
Related Documents
:
|
10917356 - Advances in mobile intraoperative magnetic resonance imaging. 6299646 - Techniques and approaches to proton nmr imaging of the head. 12069076 - Availability of nmr microscopic observation of mouse embryo disorder: examination in ma... 8847976 - Evaluation of gradient inhomogeneity in the optimal design of gradient coils. 9735446 - Continuing quality improvement procedures for a clinical pacs. 14664026 - Re-use of a multi-purpose knowledge corpus on cortex anatomy for educational purposes. |
Publication Detail:
|
Type: Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't Date: 2010-03-15 |
Journal Detail:
|
Title: IEEE transactions on medical imaging Volume: 29 ISSN: 1558-254X ISO Abbreviation: IEEE Trans Med Imaging Publication Date: 2010 May |
Date Detail:
|
Created Date: 2010-07-27 Completed Date: 2011-02-04 Revised Date: 2012-04-24 |
Medline Journal Info:
|
Nlm Unique ID: 8310780 Medline TA: IEEE Trans Med Imaging Country: United States |
Other Details:
|
Languages: eng Pagination: 1173-81 Citation Subset: IM |
Affiliation:
|
Information Systems Laboratory, Department of Electrical Engineering, Stanford University, Stanford, CA 94305, USA. cukur@stanford.edu |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Algorithms Artifacts Image Enhancement / methods Image Interpretation, Computer-Assisted / methods* Magnetic Resonance Imaging / methods* |
| Grant Support | |
ID/Acronym/Agency:
|
R01 HL039297-24/HL/NHLBI NIH HHS; R01 HL075803-08/HL/NHLBI NIH HHS; R01-HL075803/HL/NHLBI NIH HHS; R01-HL39297/HL/NHLBI NIH HHS |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: An efficient numerical method for general L(p) regularization in fluorescence molecular tomography.
Next Document: Automatic parameter selection for multimodal image registration.