| Hepatic helical CT: contrast material injection protocol. | |
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MedLine Citation:
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PMID: 8029399 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: To develop and compare contrast material injection protocols suitable for hepatic helical computed tomography (CT). MATERIALS AND METHODS: Monophasic and biphasic helical CT were performed with contrast material with an iodine load of 50 g at 3 mL/sec for 60 seconds or at 5 mL/sec for 10 seconds and 2 mL/sec for 65 seconds, respectively. In 58 men and 51 women, aged 22-77 years, aortic and hepatic enhancement curves were constructed from a cluster acquisition with a slip-ring scanner operating in a nonhelical mode. RESULTS: The monophasic protocol produced a higher peak aortic enhancement (180 HU +/- 47 [+/- 1 standard deviation]) than the biphasic protocol (150 HU +/- 24). Peak hepatic enhancement (63-64 HU +/- 15) was equivalent. Calculated equilibrium time for the monophasic protocol was 95.1 seconds and for the biphasic protocol was 101.4 seconds. The contrast enhancement index differed only marginally between the two protocols (P < .4). CONCLUSION: Monophasic and biphasic protocols produced equivalent results when tailored for the shorter temporal window of a rapid-sequence helical acquisition. |
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Authors:
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W D Foley; R G Hoffmann; F A Quiroz; C E Kahn; R S Perret |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Radiology Volume: 192 ISSN: 0033-8419 ISO Abbreviation: Radiology Publication Date: 1994 Aug |
Date Detail:
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Created Date: 1994-08-11 Completed Date: 1994-08-11 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 0401260 Medline TA: Radiology Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 367-71 Citation Subset: AIM; IM |
Affiliation:
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Department of Radiology, Medical College of Wisconsin, Milwaukee 53226. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Aortography Contrast Media / administration & dosage* Female Humans Injections, Intravenous Liver / radiography* Male Middle Aged Tomography, X-Ray Computed / methods* |
| Chemical | |
Reg. No./Substance:
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0/Contrast Media |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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