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Measurement of the ascending aorta diameter in patients with severe bicuspid and tricuspid aortic valve stenosis using dual-source computed tomography coronary angiography.
MedLine Citation:
PMID:  22009020     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
We aimed to evaluate the diagnostic performance of dual-source computed tomography coronary angiography (DSCT-CA) in the measurement of the ascending aorta (AA) diameter and compare the AA diameter in patients with severe bicuspid aortic valve (BAV) and tricuspid aortic valve (TAV) stenosis. Eighty-eight consecutive patients (50 men, mean age 60.3 ± 13 year) with severe aortic stenosis (AS) underwent DSCT-CA before aortic valve surgery. Seventy-four of the 88 patients underwent cardiovascular magnetic resonance (CMR). The internal diameter of AA was measured from early-systole with DSCT-CA and CMR by 2 radiologists independently at 4 levels (aortic annulus, sinuses of Valsalva, sinotubular junction, and tubular portion at the right pulmonary artery). The patients were divided in to 2 groups (BAV [n = 53]; TAV [n = 35]) according to operative findings. Patients with BAV were significantly younger than those with TAV (P = 0.0035). Inter-observer agreement of AA diameters at 4 levels with DSCT-CA and CMR was excellent (intraclass correlation coefficient = 0.89-0.97). Also, the DSCT-CA and CMR measurements of the AA diameter strongly correlated (r = 0.871-0.976). Mean diameter of the AA by DSCT-CA was significantly larger in patients with BAV (34.4 ± 8.2 mm) as compared to those with TAV (30.6 ± 5.5 mm). The diameters at the sinuses of Valsalva, sinotubular junction, and tubular portion were significantly larger in BAV than in TAV. Twenty-two of 53 (41.5%) patients with BAV and 2 of 35 (5.7%) patients with TAV had AA dilatation > 45 mm. DSCT-CA allows accurate assessment of the AA diameters in patients with severe AS. Patients with severe BAV stenosis had larger AA diameters and higher prevalence of AA dilatation > 45 mm as compared to those with severe TAV stenosis.
Authors:
Jee Young Son; Sung Min Ko; Jin Woo Choi; Meong Gun Song; Hweung Kon Hwang; Sook Jin Lee; Joon-Won Kang
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-10-19
Journal Detail:
Title:  The international journal of cardiovascular imaging     Volume:  -     ISSN:  1875-8312     ISO Abbreviation:  -     Publication Date:  2011 Oct 
Date Detail:
Created Date:  2011-10-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100969716     Medline TA:  Int J Cardiovasc Imaging     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Radiology, Konkuk University Hospital, Konkuk University School of Medicine, 4-12 Hwayang-dong, Gwangjin-gu, Seoul, 143-729, Korea.
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