| Analytical models for multi-slice helical CT performance parameters. | |
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MedLine Citation:
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PMID: 12607834 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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One of the most recent technological advancements in computed tomography (CT) is the introduction of multi-slice CT (MSCT). When combined with the helical scan mode, MSCT offers significant improvements in volume coverage, isotropic spatial resolution, and contrast utilization. Although experimental studies have been conducted on MSCT performance, there is a lack of theoretical analysis on the slice sensitivity profile (SSP) and noise performance. In this paper, we derive several closed-form expressions, for linear interpolation based helical reconstruction algorithms, to characterize these performance parameters under different detector configurations and acquisition modes. Following the common practice, the expressions are explicitly described for regions near the iso-center, although the same approach can be used to describe system performances away from the iso-center. These models are validated against phantom experiments. |
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Authors:
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Jiang Hsieh |
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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: Medical physics Volume: 30 ISSN: 0094-2405 ISO Abbreviation: Med Phys Publication Date: 2003 Feb |
Date Detail:
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Created Date: 2003-02-27 Completed Date: 2003-08-21 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0425746 Medline TA: Med Phys Country: United States |
Other Details:
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Languages: eng Pagination: 169-78 Citation Subset: IM |
Affiliation:
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GE Medical Systems, Milwaukee, Wisconsin 53201-0414, USA. jiang.hsieh@med.ge.com |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Algorithms* Artifacts Computer Simulation Equipment Failure Analysis / methods Imaging, Three-Dimensional / methods Models, Theoretical* Phantoms, Imaging Quality Control Radiographic Image Enhancement / methods* Reproducibility of Results Sensitivity and Specificity Tomography, Spiral Computed / instrumentation*, methods* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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