| Pulmonary venous evaluation using electrocardiogram-gated 64-detector row cardiac CT. | |
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MedLine Citation:
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PMID: 22167511 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVES: Radiofrequency ablation of the pulmonary veins is an accepted treatment for atrial fibrillation. An accurate knowledge of pulmonary venous anatomy and dimensions is desirable prior to such a procedure. The objective of this study was to use 64-detector row cardiac CT to investigate the changes in pulmonary venous dimensions during the cardiac cycle. METHODS: Data from 44 consecutive patients with no significant cardiovascular pathology who underwent electrocardiogram (ECG)-gated 64-detector row coronary angiography were retrospectively analysed. Average diameter and cross-sectional area were measured at 5 mm intervals from each pulmonary vein ostium, in ventricular end-diastole and ventricular end-systole, using curved multiplanar reformats. RESULTS: 4 (9.1%) patients had pulmonary vein anomalies and were excluded. In the remaining 40 patients, pulmonary vein diameter and area at the ostium were significantly larger in end-systole in all four veins, with the largest differences in the superior pulmonary veins. Dimensional changes for diameter (millimetres) and area (square millimetres) were as follows: left superior pulmonary vein, 2.5 (p<0.001), 65.48 (p<0.001); right superior pulmonary vein, 1.63 (p<0.001), 56.27 (p<0.001); left inferior pulmonary vein, 1.1 (p<0.001), 30.41 (p<0.001); and right inferior pulmonary vein, 0.68 (p=0.005), 30.14 (p=0.005). Less marked changes were seen at measurement sites further from the atrium. Interobserver correlation was high (all but one measurement >0.9). CONCLUSION: Pulmonary vein dimensions change significantly between end-systole and end-diastole, and the ostia of the superior pulmonary veins are potentially the most vulnerable to dimensional inaccuracies. ECG-gated cardiac CT may provide a more precise method of pulmonary venous dimensional measurement than non-gated techniques. Knowledge of change in pulmonary vein diameter offers interesting potential research into the effect of pulmonary vein function. |
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Authors:
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N E Manghat; H C Mathias; N Kakani; M C K Hamilton; G Morgan-Hughes; C A Roobottom |
Publication Detail:
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Type: Comparative Study; Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't Date: 2011-12-13 |
Journal Detail:
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Title: The British journal of radiology Volume: 85 ISSN: 1748-880X ISO Abbreviation: Br J Radiol Publication Date: 2012 Jul |
Date Detail:
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Created Date: 2012-06-29 Completed Date: 2012-09-12 Revised Date: 2013-04-16 |
Medline Journal Info:
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Nlm Unique ID: 0373125 Medline TA: Br J Radiol Country: England |
Other Details:
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Languages: eng Pagination: 965-71 Citation Subset: AIM; IM |
Affiliation:
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Bristol Heart Institute, Bristol Royal Infirmary, Bristol, UK. Nathan.manghat@UHBristol.nhs.uk |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Atrial Fibrillation
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physiopathology,
radiography,
surgery* Cardiac-Gated Imaging Techniques / methods* Catheter Ablation / methods Cohort Studies Coronary Angiography / methods* Female Humans Imaging, Three-Dimensional Male Observer Variation Preoperative Care / methods Pulmonary Veins / abnormalities, radiography*, surgery Radiographic Image Interpretation, Computer-Assisted* Retrospective Studies Sensitivity and Specificity Statistics, Nonparametric Tomography, X-Ray Computed / methods* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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