Dong Hyun Yang1, Dae-Hee Kim1, Mark D Handschumacher2, Robert A Levine2, Joon Bum Kim3, Byung Joo Sun1, Jeong Yoon Jang1, Namkug Kim4, Seunghee Baek5, Joon-Won Kang1, Jong-Min Song1, Duk-Hyun Kang1, Tae-Hwan Lim1, Jae-Kwan Song1. 1. Cardiac Imaging Center, Asan Medical Center Heart Institute, University of Ulsan College of Medicine, Asanbyeongwon-gil 86, Seoul 138-736, South Korea. 2. Cardiac Ultrasound Laboratory, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA. 3. Department of Cardiothoracic Surgery, Asan Medical Center Heart Institute, University of Ulsan College of Medicine, Seoul, South Korea. 4. Department of Convergence Medicine, Asan Medical Center Heart Institute, University of Ulsan College of Medicine, Seoul, South Korea. 5. Department of Clinical Epidemiology and Biostatistics, Asan Medical Center Heart Institute, University of Ulsan College of Medicine, Seoul, South Korea.
Abstract
AIMS: Understanding normal asymmetry in the aortic root could aid in the development of new surgical repair techniques or devices with improved haemodynamic performance. The purpose of this study was to assess geometric asymmetry and age-related changes in the normal aortic root using 3D computed tomography. METHODS AND RESULTS: The institutional review board approved this retrospective study of 130 normal subjects (mean age, 51.4 years; 58 men). Specialized 3D software measured individual cusp sinus volumes (CSVs), cusp surface areas (CSAs), and intercommissural distances (ICDs). Age-related aortic root changes were evaluated with simple correlation, ANOVA test among age groups, and multivariable linear regression analyses. The CSV and CSA of left coronary cusp (LCC) were significantly smaller than those of right coronary cusp (RCC) and non-coronary cusp (NCC) (both, P < 0.001) in all age groups. The mean ratios of RCC or NCC-to-LCC were 1.38 and 1.36 for CSV, 1.19 and 1.20 for CSA, and 1.21 and 1.06 for ICD, respectively. The CSV and ICD increased in older age with weak-to-moderate correlation coefficients in both men and women. By multivariable linear regression, CSVs and ICDs of all cusps showed a positive correlation with age (P < 0.05), and the female gender was associated with a smaller size of the CSV and CSA. CONCLUSIONS: The LCC was significantly smaller than the other two cusps, and the aortic root size increased with age. Published on behalf of the European Society of Cardiology. All rights reserved.
AIMS: Understanding normal asymmetry in the aortic root could aid in the development of new surgical repair techniques or devices with improved haemodynamic performance. The purpose of this study was to assess geometric asymmetry and age-related changes in the normal aortic root using 3D computed tomography. METHODS AND RESULTS: The institutional review board approved this retrospective study of 130 normal subjects (mean age, 51.4 years; 58 men). Specialized 3D software measured individual cusp sinus volumes (CSVs), cusp surface areas (CSAs), and intercommissural distances (ICDs). Age-related aortic root changes were evaluated with simple correlation, ANOVA test among age groups, and multivariable linear regression analyses. The CSV and CSA of left coronary cusp (LCC) were significantly smaller than those of right coronary cusp (RCC) and non-coronary cusp (NCC) (both, P < 0.001) in all age groups. The mean ratios of RCC or NCC-to-LCC were 1.38 and 1.36 for CSV, 1.19 and 1.20 for CSA, and 1.21 and 1.06 for ICD, respectively. The CSV and ICD increased in older age with weak-to-moderate correlation coefficients in both men and women. By multivariable linear regression, CSVs and ICDs of all cusps showed a positive correlation with age (P < 0.05), and the female gender was associated with a smaller size of the CSV and CSA. CONCLUSIONS: The LCC was significantly smaller than the other two cusps, and the aortic root size increased with age. Published on behalf of the European Society of Cardiology. All rights reserved.
Authors: S J Choo; G McRae; J P Olomon; G St George; W Davis; C L Burleson-Bowles; D Pang; H H Luo; D Vavra; D T Cheung; J H Oury; C M Duran Journal: J Heart Valve Dis Date: 1999-07
Authors: Joseph S Coselli; Irina V Volguina; Scott A LeMaire; Thoralf M Sundt; Heidi M Connolly; Elizabeth H Stephens; Hartzell V Schaff; Dianna M Milewicz; Luca A Vricella; Harry C Dietz; Charles G Minard; D Craig Miller Journal: J Thorac Cardiovasc Surg Date: 2014-02-08 Impact factor: 5.209