J
Jelmer Westra
Researcher at Aarhus University Hospital
Publications - 50
Citations - 1339
Jelmer Westra is an academic researcher from Aarhus University Hospital. The author has contributed to research in topics: Fractional flow reserve & Coronary artery disease. The author has an hindex of 12, co-authored 38 publications receiving 741 citations. Previous affiliations of Jelmer Westra include Aarhus University.
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Journal ArticleDOI
Diagnostic Accuracy of Fast Computational Approaches to Derive Fractional Flow Reserve From Diagnostic Coronary Angiography : The International Multicenter FAVOR Pilot Study
Shengxian Tu,Jelmer Westra,Junqing Yang,Clemens von Birgelen,Angela Ferrara,Mariano Pellicano,Holger Nef,Matteo Tebaldi,Yoshinobu Murasato,Alexandra J. Lansky,Emanuele Barbato,Liefke C. van der Heijden,Johan H. C. Reiber,Niels Ramsing Holm,William Wijns +14 more
TL;DR: The QFR computation improved the diagnostic accuracy of 3-dimensional quantitative coronary angiography-based identification of stenosis significance and bears the potential of a wider adoption of FFR-based lesion assessment through a reduction in procedure time, risk, and costs.
Journal ArticleDOI
Diagnostic Performance of In‐Procedure Angiography‐Derived Quantitative Flow Reserve Compared to Pressure‐Derived Fractional Flow Reserve: The FAVOR II Europe‐Japan Study
Jelmer Westra,Birgitte Krogsgaard Andersen,Gianluca Campo,Hitoshi Matsuo,Lukasz Koltowski,Ashkan Eftekhari,Tommy Liu,Luigi Di Serafino,Domenico Di Girolamo,Javier Escaned,Holger Nef,Christoph Naber,Marco Barbierato,Shengxian Tu,Omeed Neghabat,Morten Madsen,Matteo Tebaldi,Toru Tanigaki,Janusz Kochman,Samer Somi,Giovanni Esposito,Giuseppe Mercone,Hernán Mejía-Rentería,Federico Ronco,Hans Erik Bøtker,William Wijns,Evald Høj Christiansen,Niels Ramsing Holm +27 more
TL;DR: Online computation of QFR in the catheterization laboratory is clinically feasible and is superior to angiographic assessment for evaluation of intermediary coronary artery stenosis using FFR as a reference standard.
Journal ArticleDOI
Evaluation of Coronary Artery Stenosis by Quantitative Flow Ratio During Invasive Coronary Angiography: The WIFI II Study (Wire-Free Functional Imaging II).
Jelmer Westra,Shengxian Tu,Simon Winther,Louise Nissen,Mai Britt Vestergaard,Birgitte Krogsgaard Andersen,Emil Holck,Camilla Fox Maule,Jane Kirk Johansen,Lene Nyhus Andreasen,Jo Krogsgaard Simonsen,Yimin Zhang,Steen Dalby Kristensen,Michael Maeng,Anne Kaltoft,Christian Juhl Terkelsen,Lars Romer Krusell,Lars Jakobsen,Johan H. C. Reiber,Jens Flensted Lassen,Morten Bøttcher,Hans Erik Bøtker,Evald Høj Christiansen,Niels Ramsing Holm +23 more
TL;DR: A QFR–FFR hybrid approach based on the present results enables wire-free and adenosine-free procedures in 68% of cases and shows good agreement and diagnostic accuracy compared with FFR.
Journal ArticleDOI
Diagnostic performance of angiography-derived fractional flow reserve: a systematic review and Bayesian meta-analysis.
Carlos Collet,Yoshinobu Onuma,Jeroen Sonck,Taku Asano,Bert Vandeloo,Ran Kornowski,Shengxian Tu,Jelmer Westra,Niels Ramsing Holm,Bo Xu,Robbert J. de Winter,Jan G.P. Tijssen,Yosuke Miyazaki,Yuki Katagiri,Erhan Tenekecioglu,Rodrigo Modolo,Ply Chichareon,Bernard Cosyns,Daniel Schoors,Bram Roosens,Stijn Lochy,J. F. Argacha,Alexandre van Rosendael,Jeroen J. Bax,Johan H. C. Reiber,Javier Escaned,Bernard De Bruyne,William Wijns,Patrick W. Serruys +28 more
TL;DR: The accuracy of angiography-derived FFR was good to detect haemodynamically significant lesions with pressure-wire measured FFR as a reference, and a diagnostic strategy trial with angiographer's derived FFR evaluating clinical endpoints is warranted.
Journal ArticleDOI
Diagnostic performance of quantitative flow ratio in prospectively enrolled patients: An individual patient-data meta-analysis.
Jelmer Westra,Shengxian Tu,Gianluca Campo,Shubin Qiao,Hitoshi Matsuo,Xinkai Qu,Lukasz Koltowski,Yunxiao Chang,Tommy Liu,Junqing Yang,Birgitte Krogsgaard Andersen,Ashkan Eftekhari,Evald Høj Christiansen,Javier Escaned,William Wijns,Bo Xu,Niels Ramsing Holm +16 more
TL;DR: This work aimed to provide robust performance estimates for quantitative flow ratio (QFR) in assessment of intermediary coronary lesions with high confidence in terms of accuracy and consistency.