Matches in SemOpenAlex for { <https://semopenalex.org/work/W2023784359> ?p ?o ?g. }
- W2023784359 endingPage "522" @default.
- W2023784359 startingPage "516" @default.
- W2023784359 abstract "Knowledge of the dynamic changes of the aortic valve (AV) annulus may aid in the sizing and design of transcatheter valve prostheses. We assessed AV annulus distention in patients without AV disease and with severe AV stenosis (AS) using computed tomography (CT).Electrocardiogram-gated multislice CT scans of 15 patients without AV disease (age 53±12 years) and 20 patients with severe AS (age 81±6 years) were analyzed. Images in plane with the AV annulus were reconstructed for every 10% to 12.5% of the cardiac cycle. With the use of dedicated software the annulus was segmented. In all phases of the cardiac cycle the area was measured, as were the maximum radius (Rmax) and minimum radius (Rmin) of an ellipse fitted around the segmented lumen. The asymmetry ratio was defined as Rmax/Rmin. Direct comparison of both groups was not possible because age and scan protocols were confounding factors.The mean change of the area, Rmax, and Rmin was 122±33 mm2, 1.8±0.7 mm, and 2.4±0.5 mm in the patients with nondiseased annulus and 98±52 mm2, 1.4±0.7 mm, and 1.9±0.8 mm in those with AS. The mean asymmetry ratio was 1.3±0.1, indicating an elliptic annulus. Both the asymmetry ratio and the area changed significantly over the cardiac cycle (p<0.001).With the use of CT and postprocessing software, significant area and radius changes during the cardiac cycle were demonstrated in both the nondiseased annulus and the stenotic annulus. This finding may help selection of the optimal size in patients undergoing AV implantation and also aid in prosthesis design." @default.
- W2023784359 created "2016-06-24" @default.
- W2023784359 creator A5012295393 @default.
- W2023784359 creator A5015441961 @default.
- W2023784359 creator A5030093912 @default.
- W2023784359 creator A5042145465 @default.
- W2023784359 creator A5045098927 @default.
- W2023784359 creator A5058467567 @default.
- W2023784359 creator A5073193476 @default.
- W2023784359 creator A5082808804 @default.
- W2023784359 creator A5083808912 @default.
- W2023784359 date "2012-02-01" @default.
- W2023784359 modified "2023-09-25" @default.
- W2023784359 title "Pulsatile Distention of the Nondiseased and Stenotic Aortic Valve Annulus: Analysis With Electrocardiogram-Gated Computed Tomography" @default.
- W2023784359 cites W118223332 @default.
- W2023784359 cites W1987271654 @default.
- W2023784359 cites W2003849482 @default.
- W2023784359 cites W2006728969 @default.
- W2023784359 cites W2015795623 @default.
- W2023784359 cites W2044688245 @default.
- W2023784359 cites W2044952091 @default.
- W2023784359 cites W2048159111 @default.
- W2023784359 cites W2079963969 @default.
- W2023784359 cites W2110990603 @default.
- W2023784359 cites W2119073288 @default.
- W2023784359 cites W2119524453 @default.
- W2023784359 cites W2131882495 @default.
- W2023784359 cites W2135282818 @default.
- W2023784359 cites W2140427427 @default.
- W2023784359 cites W2412619886 @default.
- W2023784359 cites W2417826351 @default.
- W2023784359 cites W2890269455 @default.
- W2023784359 cites W3022029710 @default.
- W2023784359 cites W4236756589 @default.
- W2023784359 cites W4251775137 @default.
- W2023784359 doi "https://doi.org/10.1016/j.athoracsur.2011.08.068" @default.
- W2023784359 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/22137241" @default.
- W2023784359 hasPublicationYear "2012" @default.
- W2023784359 type Work @default.
- W2023784359 sameAs 2023784359 @default.
- W2023784359 citedByCount "18" @default.
- W2023784359 countsByYear W20237843592013 @default.
- W2023784359 countsByYear W20237843592015 @default.
- W2023784359 countsByYear W20237843592016 @default.
- W2023784359 countsByYear W20237843592017 @default.
- W2023784359 countsByYear W20237843592018 @default.
- W2023784359 countsByYear W20237843592019 @default.
- W2023784359 countsByYear W20237843592020 @default.
- W2023784359 countsByYear W20237843592021 @default.
- W2023784359 crossrefType "journal-article" @default.
- W2023784359 hasAuthorship W2023784359A5012295393 @default.
- W2023784359 hasAuthorship W2023784359A5015441961 @default.
- W2023784359 hasAuthorship W2023784359A5030093912 @default.
- W2023784359 hasAuthorship W2023784359A5042145465 @default.
- W2023784359 hasAuthorship W2023784359A5045098927 @default.
- W2023784359 hasAuthorship W2023784359A5058467567 @default.
- W2023784359 hasAuthorship W2023784359A5073193476 @default.
- W2023784359 hasAuthorship W2023784359A5082808804 @default.
- W2023784359 hasAuthorship W2023784359A5083808912 @default.
- W2023784359 hasConcept C126322002 @default.
- W2023784359 hasConcept C126838900 @default.
- W2023784359 hasConcept C131631996 @default.
- W2023784359 hasConcept C150936888 @default.
- W2023784359 hasConcept C164705383 @default.
- W2023784359 hasConcept C176752191 @default.
- W2023784359 hasConcept C2776570981 @default.
- W2023784359 hasConcept C2780007028 @default.
- W2023784359 hasConcept C2781414266 @default.
- W2023784359 hasConcept C59822182 @default.
- W2023784359 hasConcept C71924100 @default.
- W2023784359 hasConcept C86803240 @default.
- W2023784359 hasConcept C99398487 @default.
- W2023784359 hasConceptScore W2023784359C126322002 @default.
- W2023784359 hasConceptScore W2023784359C126838900 @default.
- W2023784359 hasConceptScore W2023784359C131631996 @default.
- W2023784359 hasConceptScore W2023784359C150936888 @default.
- W2023784359 hasConceptScore W2023784359C164705383 @default.
- W2023784359 hasConceptScore W2023784359C176752191 @default.
- W2023784359 hasConceptScore W2023784359C2776570981 @default.
- W2023784359 hasConceptScore W2023784359C2780007028 @default.
- W2023784359 hasConceptScore W2023784359C2781414266 @default.
- W2023784359 hasConceptScore W2023784359C59822182 @default.
- W2023784359 hasConceptScore W2023784359C71924100 @default.
- W2023784359 hasConceptScore W2023784359C86803240 @default.
- W2023784359 hasConceptScore W2023784359C99398487 @default.
- W2023784359 hasFunder F4320321642 @default.
- W2023784359 hasFunder F4320321780 @default.
- W2023784359 hasFunder F4320321799 @default.
- W2023784359 hasIssue "2" @default.
- W2023784359 hasLocation W20237843591 @default.
- W2023784359 hasLocation W20237843592 @default.
- W2023784359 hasOpenAccess W2023784359 @default.
- W2023784359 hasPrimaryLocation W20237843591 @default.
- W2023784359 hasRelatedWork W1544967845 @default.
- W2023784359 hasRelatedWork W1551325623 @default.
- W2023784359 hasRelatedWork W1983749074 @default.
- W2023784359 hasRelatedWork W2014714330 @default.
- W2023784359 hasRelatedWork W2023784359 @default.