ArticleClinical research in cardiology : official journal of the German Cardiac Society2016
Cyclic changes in area- and perimeter-derived effective dimensions of the aortic annulus measured with multislice computed tomography and comparison with metric intraoperative sizing.
Article in Clinical research in cardiology : official journal of the German Cardiac Society, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed, 19 citations in OpenAlex.
- 3D echocardiographic analysis of aortic annulus for transcatheter aortic valve replacement using novel aortic valve quantification software: Comparison with computed tomography.Echocardiography (Mount Kisco, N.Y.) · 2017Trial
- Computed tomography-based prediction of commissural positions facilitates valve-sparing aortic root replacement.JTCVS techniques · 2026Article
- MDCT evaluation of dynamic changes in aortic root parameters during the cardiac cycle in patients with aortic regurgitation.Scientific reports · 2025Article
- Ultrasonography of Hepatocellular Carcinoma: From Diagnosis to Prognosis.Journal of clinical and translational hepatology · 2024Review
- Multi-modality imaging evaluation and pre-surgical planning for aortic valve-sparing operations in patients with aortic root aneurysm.Annals of cardiothoracic surgery · 2023Review
- Structural Responses of Integrated Parametric Aortic Valve in an Electro-Mechanical Full Heart Model.Annals of biomedical engineering · 2021Article
- Aortic annulus measurement with computed tomography angiography reduces aortic regurgitation after transfemoral aortic valve replacement compared to 3-D echocardiography: a single-centre experience.Clinical research in cardiology : official journal of the German Cardiac Society · 2019Article
- Optimal pre-TAVR annulus sizing in patients with bicuspid aortic valve: area-derived perimeter by CT is the best-correlated measure with intraoperative sizing.European radiology · 2019Article
- Transcatheter valve-in-valve implantation (VinV-TAVR) for failed surgical aortic bioprosthetic valves.Clinical research in cardiology : official journal of the German Cardiac Society · 2019Article
- Do CTA measurements of annular diameter, perimeter and area result in different TAVI prosthesis sizes?The international journal of cardiovascular imaging · 2018Article
- Patient-specific registration of 3D CT angiography (CTA) with X-ray fluoroscopy for image fusion during transcatheter aortic valve implantation (TAVI) increases performance of the procedure.Clinical research in cardiology : official journal of the German Cardiac Society · 2018Article
- The Pivotal Role of Imaging in TAVR Procedures.Current cardiology reports · 2018Review
- Comparison of outcomes using balloon-expandable versus self-expanding transcatheter prostheses according to the extent of aortic valve calcification.Clinical research in cardiology : official journal of the German Cardiac Society · 2017Article
- Right ventricular fistula post-TAVR: amenable to interventional closure treatment.Clinical research in cardiology : official journal of the German Cardiac Society · 2017Article
- 3D transoesophageal echocardiography in the TAVI sizing arena: should we do it and how do we do it?Echo research and practice · 2017Review
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Authors and funding
10 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
aimsMultislice computed tomography (MSCT) is recommended for annular sizing prior to transcatheter aortic valve implantation (TAVI), but it remains unclear whether systolic or diastolic reconstructions should be used and whether the effective annular diameter should be derived by area or perimeter. In this study these different approaches were compared with intraoperative sizing.
methodsIn 52 patients who were evaluated but deemed unsuitable for TAVI, the annulus was measured during conventional surgery using metric sizers (AnnOp) and compared with MSCT measurements (cross-sectional diameter derived by area [AnnAsys, AnnAdia; AnnAmean = (AnnAsys + AnnAdia)/2] and perimeter (AnnPsys, AnnPdia) in systole and diastole). Furthermore, TAVI was simulated based on AnnOp and the impact of the various MSCT approaches on sizing strategy was determined.
resultsThe best agreement with AnnOp [mean difference (limits of agreement)] was shown for AnnAmean [0.03 mm (-1.9 to 1.96)], whereas the strongest deviation was noted for AnnPsys [-1.08 mm (-3.01 to 0.86)]. Mean differences between systole and diastole were significant but small: 0.82 mm (3.5 %) for area- and 0.81 mm (3.3 %) for perimeter-derived measurements. Simulation of TAVI revealed the least change of strategy for AnnAmean (76.9 %) as compared with AnnPsys (53.8 %); between AnnAsys and AnnAdia sizing would have been deviant in 17.3 % due to relatively large intraindividual cyclic differences.
conclusionsAnnAmean demonstrated the best agreement with AnnOp, whereas perimeter-derived measurements were somewhat overestimated. Despite a negligible average difference between systolic and diastolic annular values, in a subset of patients the intraindividual cyclic variability was relatively large and potentially of clinical impact.
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