{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T09:09:50Z","timestamp":1790672990757,"version":"4.1.0"},"reference-count":44,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2018,9,28]],"date-time":"2018-09-28T00:00:00Z","timestamp":1538092800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100001711","name":"Schweizerischer Nationalfonds zur F\u00f6rderung der Wissenschaftlichen Forschung","doi-asserted-by":"publisher","award":["320030_149567"],"award-info":[{"award-number":["320030_149567"]}],"id":[{"id":"10.13039\/501100001711","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Magnetic Resonance in Med"],"published-print":{"date-parts":[[2019,1]]},"abstract":"<jats:sec><jats:title>Purpose:<\/jats:title><jats:p>To investigate limitations of partial Fourier acquisition in phase\u2010contrast MRI of turbulent kinetic energy (TKE).<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods:<\/jats:title><jats:p>To assess the validity of partial Fourier reconstruction of TKE and phase images, computational fluid dynamics data of mean and turbulent velocities in a stenotic U\u2010bend phantom was used. Partial Fourier acquisition with 75% k\u2010space coverage was simulated and TKE data were reconstructed using zero\u2010filling, homodyne reconstruction, and the method of projections onto convex sets (POCS). Results were compared to data from fully sampled k\u2010space and 75% symmetric sampling. In addition, compressed sensing (CS) reconstruction was compared for a standard variable density sampling pattern and a variable density sampling pattern combined with 75% partial Fourier. For illustration purposes, in vivo examples of velocity magnitude and TKE maps of aortic flow reconstructed with the different methods are provided.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results:<\/jats:title><jats:p>In accordance with theory, partial Fourier reconstruction of TKE maps from phase\u2010contrast data results in artifacts relative to fully sampled data. It is demonstrated that neither homodyne reconstruction nor POCS can improve reconstruction of TKE data with respect to zero\u2010filling reconstruction when compared to ground\u2010truth (RMS error: 4.70%, 4.34%, and 2.45% for homodyne, POCS, and zero\u2010filling reconstruction of in vivo data, respectively). CS reconstruction from data acquired with partial Fourier did not recover the resolution loss incurred by partial Fourier sampling.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion:<\/jats:title><jats:p>Partial Fourier reconstruction of TKE maps from phase\u2010contrast data does not yield a benefit over zero\u2010filling reconstruction. In consequence, symmetric sampling is preferred over partial Fourier acquisition for a given number of phase\u2010encodes in phase\u2010contrast MRI.<\/jats:p><\/jats:sec>","DOI":"10.1002\/mrm.27397","type":"journal-article","created":{"date-parts":[[2018,9,29]],"date-time":"2018-09-29T00:06:57Z","timestamp":1538179617000},"page":"514-523","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["On the limitations of partial Fourier acquisition in phase\u2010contrast MRI of turbulent kinetic energy"],"prefix":"10.1002","volume":"81","author":[{"given":"Jonas","family":"Walheim","sequence":"first","affiliation":[{"name":"Institute for Biomedical Engineering University and ETH Zurich Zurich Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alexander","family":"Gotschy","sequence":"additional","affiliation":[{"name":"Institute for Biomedical Engineering University and ETH Zurich Zurich Switzerland"},{"name":"Department of Cardiology University Hospital Zurich Zurich Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sebastian","family":"Kozerke","sequence":"additional","affiliation":[{"name":"Institute for Biomedical Engineering University and ETH Zurich Zurich Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2018,9,28]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.1910300109"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/0730-725X(87)90402-4"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1148\/radiology.161.2.3763926"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.25862"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.21022"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1109\/42.79473"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1109\/TMI.2016.2577642"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1002\/jmri.20472"},{"key":"e_1_2_8_10_1","unstructured":"FooTKF.Producing a phase contrast MR image from a partial Fourier data acquisition. 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