2009 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2009-01, Vol.2009, p.2703-2706
2009
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Details
- Autor(en) / Beteiligte
- Titel
- Theoretical and experimental analysis of imaging gradients in DTI
- Ist Teil von
- 2009 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2009-01, Vol.2009, p.2703-2706
- Ort / Verlag
- United States: IEEE
- Erscheinungsjahr
- 2009
- Quelle
- MEDLINE
- Beschreibungen/Notizen
- A comprehensive, analytical framework for MR-DTI is constructed in a linear algebra setup. The expressions describing the effects of imaging gradients show formulation ambiguities. Center-symmetric gradient schemes use no cross terms (NoCroT) in the calculations resulting, at least in theory, in the alleviation of the issue. When three estimation methods, all gradients, NoCroT and diffusion gradients only are compared based on experimental results it is observed that the full inclusion of imaging gradients can be detrimental and there is slight improvement with NoCroT over diffusion gradients only. It is concluded that design of new diffusion gradient schemes via optimization is necessary to decouple to the maximum extent the effects of imaging gradients.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 1094-687X, 1557-170XeISSN: 1558-4615DOI: 10.1109/IEMBS.2009.5332852Titel-ID: cdi_pubmed_primary_19963783
- Format
- –
- Schlagworte
- Algorithms, Computer Simulation, Design optimization, Diagnostic Imaging - methods, Diffusion, Diffusion Magnetic Resonance Imaging - instrumentation, Diffusion Magnetic Resonance Imaging - methods, Diffusion tensor imaging, Equations, Equipment Design, Humans, Hydrogen, Image analysis, Image Processing, Computer-Assisted - methods, Least-Squares Analysis, Linear algebra, Models, Statistical, Models, Theoretical, Reproducibility of Results, Symmetric matrices, USA Councils, Vectors, Virtual colonoscopy