| Pulmonary venous evaluation using electrocardiogram-gated 64-detector row cardiac computed tomography. | |
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MedLine Citation:
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PMID: 22167511 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Objectives: Radio frequency 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 was retrospectively analysed. Average diameter and cross-sectional area was measured at 5 mm intervals from each PV 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 was significantly larger in end systole in all four veins, with the largest differences in the superior pulmonary veins. Dimensional changes for diameter (mm) and area (mm(2)) 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 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: JOURNAL ARTICLE Date: 2011-12-13 |
Journal Detail:
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Title: The British journal of radiology Volume: - ISSN: 1748-880X ISO Abbreviation: - Publication Date: 2011 Dec |
Date Detail:
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Created Date: 2011-12-14 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0373125 Medline TA: Br J Radiol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Bristol Heart Institute, Bristol Royal Infirmary, Bristol, UK. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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