ArticleThe international journal of cardiovascular imaging2013
Inter-individual variance and cardiac cycle dependency of aortic root dimensions and shape as assessed by ECG-gated multi-slice computed tomography in patients with severe aortic stenosis prior to transcatheter aortic valve implantation: is it crucial for correct sizing?
Article in The international journal of cardiovascular imaging, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.
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Who cites it
23 citing papers in PubMed.
- A hybrid phenomenological finite element model of transcatheter aortic valve leaflet behaviour under non-circular annular deployment: in vitro validation and biomechanical insights.Biomechanics and modeling in mechanobiology · 2026Article
- CT angiography prior to endovascular procedures: can artificial intelligence improve reporting?Physical and engineering sciences in medicine · 2024Article
- Current Usefulness of Transesophageal Echocardiography in Patients Undergoing Transcatheter Aortic Valve Replacement.Journal of clinical medicine · 2023Review
- Preoperative TAVR Planning: How to Do It.Journal of clinical medicine · 2022Review
- Tumor necrosis factor-α promotes and exacerbates calcification in heart valve myofibroblast populations.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2021Article
- A Specific Assessment of the Normal Anatomy of the Aortic Root in Relation to Age and Gender.International journal of general medicine · 2021Article
- Computed tomography guided sizing for transcatheter pulmonary valve replacement.International journal of cardiology. Heart & vasculature · 2020Article
- Are the dynamic changes of the aortic root determinant for thrombosis or leaflet degeneration after transcatheter aortic valve replacement?Journal of thoracic disease · 2020Review
- Multidetector Computed Tomography (MDCT) Angiography in the Pre-Procedural Assessment of Patients Undergoing Transcatheter Aortic Valve Replacement.The Eurasian journal of medicine · 2020Review
- Cardiac Computed Tomography - More Than Coronary Arteries? A Clinical Update.RoFo : Fortschritte auf dem Gebiete der Rontgenstrahlen und der Nuklearmedizin · 2019Review
- Do CTA measurements of annular diameter, perimeter and area result in different TAVI prosthesis sizes?The international journal of cardiovascular imaging · 2018Article
- Aortic root evaluation prior to transcatheter aortic valve implantation-Correlation of manual and semi-automatic measurements.PloS one · 2018Article
- Anatomy of the aortic root: implications for aortic root reconstruction.General thoracic and cardiovascular surgery · 2017Review
- Cyclic changes in area- and perimeter-derived effective dimensions of the aortic annulus measured with multislice computed tomography and comparison with metric intraoperative sizing.Clinical research in cardiology : official journal of the German Cardiac Society · 2016Article
- Vascular Imaging Before Transcatheter Aortic Valve Replacement (TAVR): Why and How?Current cardiology reports · 2016Review
- CT evaluation prior to transapical aortic valve replacement: semi-automatic versus manual image segmentation.The international journal of cardiovascular imaging · 2015Article
- MDCT evaluation of aortic root and aortic valve prior to TAVI. What is the optimal imaging time point in the cardiac cycle?European radiology · 2015Observational
- Effective diameter of the aortic annulus prior to transcatheter aortic valve implantation: influence of area-based versus perimeter-based calculation.The international journal of cardiovascular imaging · 2015Article
- Cardiovascular imaging 2013 in the International Journal of Cardiovascular Imaging.The international journal of cardiovascular imaging · 2014Review
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12 authors.
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Abstract
To evaluate the inter-individual variance and the variability of the aortic root dimensions during the cardiac cycle by computed tomography (CT) in patients with severe aortic stenosis prior to transcatheter aortic valve implantation (TAVI). Fifty-six patients (m/w = 16/40, 81 ± 6.8 years), scheduled for a transapical aortic valve implantation with available preprocedural ECG-gated CT were retrospectively included. The evaluation included sizing of the aortic annulus and the aortic sinus, measurements of the coronary topography, aortic valve planimetry and scoring of calcification. The new defined aortic annulus sphericity ratio revealed a mostly elliptical shape with increasing diastolic deformation. The calculated effective diameter (ED), determined from the annulus' lumen area, turned out to be the parameter least affected from cardiac cycle changes while systolic and diastolic annulus dimensions and shape (diameter and area) differed significantly (p < 0.001). In about 70 % of the patients with relevant paravalvular leaks the finally implanted prosthesis was too small according to the CT based calculated ED. The ostial height of the coronaries showed a high variability with a critical minimum range <5 mm. The degree of the aortic calcification did not have an influence on the aortic annulus deformation during the cardiac cycle, but on the occurrence of paravalvular leaks. The aortic root anatomy demonstrated a high inter-individual variability and cardiac cycle dependency. These results must be strongly considered during the patient evaluation prior to TAVI to avoid complications. The systolic effective diameter, as measured by ECG-gated CT, represents an appropriate parameter for sizing the aortic annulus.
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