| Dose and image quality of electron-beam CT compared with spiral CT. | |
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MedLine Citation:
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PMID: 10353034 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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RATIONALE AND OBJECTIVES: To examine dose and image quality of electron-beam CT (EBCT) with continuous volume scan versus spiral CT. METHODS: An EBCT scanner was compared with a spiral CT (SCT) scanner. Three phantoms were used to measure low-contrast resolution, high-contrast resolution, slice width, and dose. RESULTS: The EBCT scans showed 30% lower high-contrast resolution for most settings. The dose was comparable to that of spiral CT with 3 mm collimation and 76%/106% higher with EBCT for 1.5 mm/6 mm collimation. Low-contrast resolution was comparable to that of spiral CT using 3 mm collimation, slightly worse for 1.5 mm, and bad for 6 mm EBCT collimation (four times higher dose to reach comparable contrast-to-noise ratio). CONCLUSIONS: Significant restrictions were found using EBCT with continuous volume scan. The authors found that 3 mm collimation can yield acceptable high-contrast resolution and good low-contrast resolution compared with spiral CT. The use of 6 mm or 1.5 mm collimation needs to be restricted to selected cases. |
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Authors:
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G Weisser; K J Lehmann; R Scheck; E Coppenrath; M Georgi |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Investigative radiology Volume: 34 ISSN: 0020-9996 ISO Abbreviation: Invest Radiol Publication Date: 1999 Jun |
Date Detail:
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Created Date: 1999-07-26 Completed Date: 1999-07-26 Revised Date: 2009-11-11 |
Medline Journal Info:
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Nlm Unique ID: 0045377 Medline TA: Invest Radiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 415-20 Citation Subset: IM |
Affiliation:
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Department of Clinical Radiology, University Hospital Mannheim, Faculty of Clinical Medicine Mannheim, University of Heidelberg Medical School, Germany. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Evaluation Studies as Topic Humans Image Processing, Computer-Assisted Phantoms, Imaging Radiation Dosage Tomography, X-Ray Computed / instrumentation, methods* |
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