Computed tomography reference dimensions for identification of stented surgical mitral bioprostheses valve size |
| |
Affiliation: | 1. Centre for Cardiovascular Innovation and Center for Heart Valve Innovation, St Paul''s and Vancouver General Hospital, Division of Cardiology and Department of Radiology University of British Columbia, Vancouver, BC, Canada;2. Department of Radiology, University of Lausanne, Lausanne, Switzerland;1. Hospital das Clínicas da Universidade Federal de Goiás, Brazil;2. Faculdade de Medicina da Universidade Federal de Goiás, Brazil;3. Centro de Diagnóstico por Imagem, Brazil;1. Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, CA, USA;2. Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA, USA;3. Research Unit Hypertension and Cardiovascular Epidemiology, KU Leuven Department of Cardiovascular Sciences, University of Leuven, Leuven, Belgium;4. Duke Clinical Research Institute, Duke University School of Medicine, Durham, NC, USA;5. Department of Radiology, Stanford University School of Medicine, Stanford, CA, USA;6. Stanford Prevention Research Center, Stanford University, Palo Alto, CA, USA;7. Departments of Ophthalmology and Neurology, Stanford University School of Medicine, Stanford, CA, USA;8. Verily Inc., South San Francisco, CA, USA;9. Stanford Center for Clinical Research (SCCR); Department of Medicine, Stanford School of Medicine, Stanford, CA, USA |
| |
Abstract: | BackgroundSelection of the transcatheter heart valve size for a mitral valve-in-valve procedure is based on the type and manufacturer’s labelled size. However, accurate information of surgical heart valve (SHV) size may not be available in the patient’s medical record. The purpose of this study is to establish reference data for computed tomography (CT) dimensions of commonly used mitral SHV in order to determine the manufacturer’s labelled size from a cardiac CT data set.MethodsCT datasets of 105 patients with surgical mitral bioprosthesis and available manufacturer labeled datasets were included in the analysis. CT derived valve dimensions were assessed by two observers using multiplanar reformats aligned with the basal sewing ring. A circular region of interest was used in a standardized fashion to minimize influence of image acquisition and reconstruction parameters. Interobserver variability was assessed by Bland-Altman analysis.ResultsThe CT-derived dimensions were stratified by valve size and type, and SHV properties were demonstrated for 5 common valve types. Variability of measurements was small and inter-observer limits of agreement were narrow. Stratified by SHV type, no overlap was noted for CT-derived dimensions among different SHV sizes . A reference table of CT characteristics of surgical mitral bioprosthesis types was created.ConclusionThe study provides reference CT data for determining the manufacturers’ labeled SHV size across a range of commonly used mitral SHVs. The findings will be important to help identify types of surgical mitral bioprosthesis utilizing CT characteristics for patients without SHV size documentation. |
| |
Keywords: | Transcatheter valve replacement Mitral valve-in-valve CT sizing mVIV" },{" #name" :" keyword" ," $" :{" id" :" kwrd0030" }," $$" :[{" #name" :" text" ," _" :" Mitral valve in valve SHV" },{" #name" :" keyword" ," $" :{" id" :" kwrd0040" }," $$" :[{" #name" :" text" ," _" :" Surgical Heart Valve THV" },{" #name" :" keyword" ," $" :{" id" :" kwrd0050" }," $$" :[{" #name" :" text" ," _" :" Transcatheter heart valve CT" },{" #name" :" keyword" ," $" :{" id" :" kwrd0060" }," $$" :[{" #name" :" text" ," _" :" Computed Tomography LVOT" },{" #name" :" keyword" ," $" :{" id" :" kwrd0070" }," $$" :[{" #name" :" text" ," _" :" Left Ventricular Outflow Tract |
本文献已被 ScienceDirect 等数据库收录! |
|