| Dual-source CT for visualization of the coronary arteries in heart transplant patients with high heart rates. | |
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MedLine Citation:
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PMID: 18647916 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: The purpose of this study was to evaluate the quality of dual-source CT images of the coronary arteries in heart transplant recipients with high heart rates. SUBJECTS AND METHODS: Contrast-enhanced dual-source CT coronary angiography was performed on 23 heart transplant recipients (20 men, three women; mean age, 61.1 +/- 12.8 years). Data sets were reconstructed in 5% steps from 30% to 80% of the R-R interval. Two blinded independent readers using a 5-point scale (0, not evaluative; 4, excellent quality) assessed the quality of images of coronary segments. RESULTS: The mean heart rate during scanning was 89.2 +/- 10.4 beats/min. Interobserver agreement on the quality of images of the whole coronary tree was a kappa value of 0.78 and for selection of the optimal reconstruction interval was a kappa value of 0.82. The optimal reconstruction interval was systole in 17 (74%) of the 23 of heart transplant recipients. At the best reconstruction interval, diagnostic image quality (score >or= 2) was obtained in 92.1% (303 of 329) of the coronary artery segments. The mean image quality score for the whole coronary tree was 3.1 +/- 1.01. No significant correlation between mean heart rate (rho = 0.31) or heart rate variability (rho = 0.23) and overall image quality score was observed (p = not significant). CONCLUSION: Dual-source CT acquisition yields coronary angiograms of diagnostic quality in heart transplant recipients. Mean heart rate and heart rate variability during scanning do not have a negative effect on the overall quality of images of the coronary arteries. |
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Authors:
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Gorka Bastarrika; Carlo Nicola De Cecco; Maria Arraiza; Stefano Mastrobuoni; Jesús C Pueyo; Matias Ubilla; Gregorio Rábago |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: AJR. American journal of roentgenology Volume: 191 ISSN: 1546-3141 ISO Abbreviation: AJR Am J Roentgenol Publication Date: 2008 Aug |
Date Detail:
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Created Date: 2008-07-23 Completed Date: 2008-08-26 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7708173 Medline TA: AJR Am J Roentgenol Country: United States |
Other Details:
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Languages: eng Pagination: 448-54 Citation Subset: AIM; IM |
Affiliation:
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Department of Radiology, Clínica Universitaria, Universidad de Navarra, Ave. Pío XII, 36, 31008 Pamplona, Spain. bastarrika@unav.es |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Contrast Media Coronary Angiography / methods* Electrocardiography Female Heart Rate / physiology* Heart Transplantation* Humans Iopamidol / analogs & derivatives, diagnostic use Male Middle Aged Radiographic Image Interpretation, Computer-Assisted Retrospective Studies Tomography, X-Ray Computed / methods* |
| Chemical | |
Reg. No./Substance:
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0/Contrast Media; 62883-00-5/Iopamidol; 78649-41-9/iomeprol |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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