Observational studyEuropean radiology2015
MDCT evaluation of aortic root and aortic valve prior to TAVI. What is the optimal imaging time point in the cardiac cycle?
Observational study in European radiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.
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Who cites it
28 citing papers in PubMed, 55 citations in OpenAlex.
- MDCT evaluation of dynamic changes in aortic root parameters during the cardiac cycle in patients with aortic regurgitation.Scientific reports · 2025Article
- Feasibility of Reduced Iodine Loads for Vascular Assessment Prior to Transcatheter Aortic Valve Implantation (TAVI) Using Spectral Detector CT.Diagnostics (Basel, Switzerland) · 2024Article
- Altered blood flow due to larger aortic diameters in patients with transcatheter heart valve thrombosis.APL bioengineering · 2023Article
- Aortic valve and vascular calcium score in pre-TAVI CT: correlation with early post-procedural complications.La Radiologia medica · 2023Article
- Accuracy of aortic annulus measurements by three-dimensional transesophageal echocardiography and predictive value for thoracic aorta aneurysm in patients with aortic regurgitation.Quantitative imaging in medicine and surgery · 2023Article
- Preoperative TAVR Planning: How to Do It.Journal of clinical medicine · 2022Review
- Multimodality Imaging in Valvular Structural Interventions.Cardiac failure review · 2022Review
- Bicuspid aortic valve annulus: assessment of geometry and size changes during the cardiac cycle as measured with a standardized method to define the annular plane.European radiology · 2021Article
- Assessment of thoracic aorta in different cardiac phases in patients with non-aorta diseases using cardiac CT.Scientific reports · 2021Article
- Mitral annular disjunction in patients with severe aortic stenosis: Extent and reproducibility of measurements with computed tomography.European journal of radiology open · 2021Article
- Pre-procedural computed tomography in transcatheter pulmonary valve replacement: The first steps towards standardization of image quality.International journal of cardiology. Heart & vasculature · 2020Article
- Comparison of the geometry of the left ventricle outflow tract, the aortic root and the ascending aorta in patients with severe tricuspid aortic stenosis versus healthy controls.The international journal of cardiovascular imaging · 2020Article
- Retrospectively ECG-gated helical vs. non-ECG-synchronized high-pitch CTA of the aortic root for TAVI planning.PloS one · 2020Article
- Observational
- Automatic Detection of the Aortic Annular Plane and Coronary Ostia from Multidetector Computed Tomography.Journal of interventional cardiology · 2020Article
- Aortic roots assessment by an automated three-dimensional transesophageal echocardiography: an intra-individual comparison.The international journal of cardiovascular imaging · 2019Article
- Preventing Coronary Obstruction During Transcatheter Aortic Valve Replacement: From Computed Tomography to BASILICA.JACC. Cardiovascular interventions · 2019Review
- Pre-procedural CT angiography inferior vena cava measurements: a predictor of mortality in patients undergoing transcatheter aortic valve implantation.European radiology · 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
- Do CTA measurements of annular diameter, perimeter and area result in different TAVI prosthesis sizes?The international journal of cardiovascular imaging · 2018Article
Corrections and comments
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Authors and funding
10 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesTo determine the optimal imaging time point for transcatheter aortic valve implantation (TAVI) therapy planning by comprehensive evaluation of the aortic root.
methodsMultidetector-row CT (MDCT) examination with retrospective ECG gating was retrospectively performed in 64 consecutive patients referred for pre-TAVI assessment. Eighteen different parameters of the aortic root were evaluated at 11 different time points in the cardiac cycle. Time points at which maximal (or minimal) sizes were determined, and dimension differences to other time points were evaluated. Theoretical prosthesis sizing based on different measurements was compared.
resultsLargest dimensions were found between 10 and 20% of the cardiac cycle for annular short diameter (10%); mean diameter (10%); effective diameter and circumference-derived diameter (20%); distance from the annulus to right coronary artery ostium (10%); aortic root at the left coronary artery level (20%); aortic root at the widest portion of coronary sinuses (20%); and right leaflet length (20%). Prosthesis size selection differed depending on the chosen measurements in 25-75% of cases.
conclusionSignificant changes in anatomical structures of the aortic root during the cardiac cycle are crucial for TAVI planning. Imaging in systole is mandatory to obtain maximal dimensions. KEY POINTS: • Most aortic root structures undergo significant dimensional changes throughout the cardiac cycle. • The largest dimensions of aortic parameters should be determined to optimize TAVI. • Circumference-derived diameter showed maximum dimension at 20% of the cardiac cycle.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.