| Enhancement performance of a 64-slice triple rule-out protocol vs 16-slice and 10-slice multidetector CT-angiography protocols for evaluation of aortic and pulmonary vasculature. | |
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MedLine Citation:
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PMID: 18043357 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: To compare the enhancement of the pulmonary and aortic vasculature between a biphasic injection 64-slice, a single-phase injection 16-slice, and a single-phase injection 10-slice multidetector computed tomographic (CT) angiography (CTA) protocols. METHODS: With institutional review board approval and Health Insurance Portability and Accountability Act compliance, 50 patients (16 men, 34 women; mean age, 51.5 years; range, 30-75 years) with atypical chest pain from the emergency department were scanned using a triple rule-out protocol on a 64-slice CT scanner. Pulmonary enhancement was compared with 50 patients (21 men, 29 women; mean age, 65.6 years; range, 38-90 years) imaged with a single-phase 16-slice pulmonary angiography protocol. Aortic enhancement was compared with 24 patients (12 men, 12 women; mean age, 66.1; range, 34-92 years) who were imaged with a 16-slice aortic dissection CTA protocol and to 25 patients (15 men, 10 women; mean age, 50.8 years; range, 20-83 years) imaged with a 10-slice aortic dissection CTA protocol. A 2-tailed Student t test or sign test was used to assess significant differences from a vascular attenuation cutoff value of 250 Hounsfield units (HU). RESULTS: Individual mean pulmonary arterial and aortic attenuation values were statistically significantly less than 250 HU for the 16- and 10-slice protocols and statistically significantly more than 250 HU for the 64-slice protocols (P < 0.05). Mean pooled pulmonary attenuation values were more than 250 HU in 18% (9/50) of the 16-slice and in 93% (39/42) of the 64-slice protocols. Mean pooled aortic attenuation values were more than 250 HU in 18.4% (9/49) of the 10- and 16- and in 100% (42/42) of the 64-slice protocols. CONCLUSIONS: The triple rule-out 64-slice biphasic injection breath hold CTA protocol provides significantly higher attenuation of aortic and pulmonary vasculature compared with our current 10- and 16-slice protocols. |
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Authors:
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Ahmad Haidary; Kostaki Bis; Thomas Vrachliotis; Thomas Vrachiolitis; Rajni Kosuri; Mamtha Balasubramaniam |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: Journal of computer assisted tomography Volume: 31 ISSN: 0363-8715 ISO Abbreviation: J Comput Assist Tomogr Publication Date: 2007 Nov-Dec |
Date Detail:
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Created Date: 2007-11-28 Completed Date: 2008-01-24 Revised Date: 2008-06-16 |
Medline Journal Info:
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Nlm Unique ID: 7703942 Medline TA: J Comput Assist Tomogr Country: United States |
Other Details:
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Languages: eng Pagination: 917-23 Citation Subset: IM |
Affiliation:
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William Beaumont Hospital, Royal Oak, MI 48073, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Aged, 80 and over Aneurysm, Dissecting / radiography Angiography / methods* Aortic Aneurysm, Thoracic / radiography Aortography / methods* Chest Pain / radiography Contrast Media Coronary Angiography / methods Female Humans Image Processing, Computer-Assisted / methods* Iohexol / diagnostic use Lung / blood supply*, radiography Male Middle Aged Prospective Studies Pulmonary Artery / radiography Pulmonary Embolism / radiography Radiographic Image Enhancement / methods* Retrospective Studies Tomography, X-Ray Computed / methods* Triiodobenzoic Acids / diagnostic use |
| Chemical | |
Reg. No./Substance:
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0/Contrast Media; 0/Triiodobenzoic Acids; 66108-95-0/Iohexol; 92339-11-2/iodixanol |
| Comments/Corrections | |
Erratum In:
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J Comput Assist Tomogr. 2008 May-Jun;32(3):496 Note: Vrachiolitis, Thomas [corrected to Vrachliotis, Thomas] |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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