| Consistency conditions upon 3D CT data and the wave equation. | |
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MedLine Citation:
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PMID: 12200929 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Source trajectories and reconstruction algorithms for clinical volumetric computerized tomography (VCT) will require optimization for efficiency and image quality. VCT data is highly overdetermined, satisfying an ultrahyperbolic partial differential equation. Characteristic boundary value problems for the hyperbolic wave equation and ultrahyperbolic equation are compared, focusing in this paper on a mathematically instructive open-gantry VCT geometry. This example provides physical insight into consistency conditions upon VCT data, clearly showing which information about the object can and cannot be recovered from a set of measured projections. Furthermore, this example demonstrates that efficient numerical solvers for the ultrahyperbolic equation can provide tremendous flexibility in the choice of reconstruction algorithm. |
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Authors:
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S K Patch |
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Publication Detail:
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Type: Comparative Study; Evaluation Studies; Journal Article; Validation Studies |
Journal Detail:
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Title: Physics in medicine and biology Volume: 47 ISSN: 0031-9155 ISO Abbreviation: Phys Med Biol Publication Date: 2002 Aug |
Date Detail:
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Created Date: 2002-08-30 Completed Date: 2003-03-20 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0401220 Medline TA: Phys Med Biol Country: England |
Other Details:
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Languages: eng Pagination: 2637-50 Citation Subset: IM |
Affiliation:
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GE Medical Systems, Applied Science Lab, PO Box 414, Mail Stop W-875, Milwaukee, WI 53201, USA. sarah.patch@med.ge.com |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Computer Simulation Fourier Analysis Humans Imaging, Three-Dimensional / methods* Models, Biological* Models, Theoretical Phantoms, Imaging Radiographic Image Enhancement / instrumentation, methods* Reproducibility of Results Ribs / radiography* Scattering, Radiation Sensitivity and Specificity Tomography, X-Ray Computed / instrumentation, methods* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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