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Robert J. Herfkens
Researcher at Stanford University
Publications - 220
Citations - 13591
Robert J. Herfkens is an academic researcher from Stanford University. The author has contributed to research in topics: Magnetic resonance imaging & Hemodynamics. The author has an hindex of 62, co-authored 220 publications receiving 12977 citations. Previous affiliations of Robert J. Herfkens include University of California, San Francisco & University of California, Berkeley.
Papers
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Phase contrast cine magnetic resonance imaging.
TL;DR: Phase contrast cine magnetic resonance imaging combines the flow-dependent contrast of phase contrast MRI with the ability of cardiac cine imaging to produce images throughout the cardiac cycle, helpful in the diagnosis of aortic dissections, in the study of flow distributions in large vessels such as pulmonary arteries, and in the evaluation of complex anatomical variants.
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Time-resolved three-dimensional phase-contrast MRI.
Michael Markl,Frandics P. Chan,Marcus T. Alley,Kris L. Wedding,Mary T. Draney,Chris Elkins,David Parker,Ryan B. Wicker,Charles A. Taylor,Robert J. Herfkens,Norbert J. Pelc +10 more
TL;DR: To demonstrate the feasibility of a four‐dimensional phase contrast technique that permits spatial and temporal coverage of an entire three‐dimensional volume, and quantitatively validate its accuracy against an established time resolved two‐dimensional PC technique to explore advantages of the approach with regard to the four-dimensional nature of the data.
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MR fluoroscopy: technical feasibility.
Stephen J. Riederer,Talin A. Tasciyan,Farhad Farzaneh,James N. Lee,R. C. Wright,Robert J. Herfkens +5 more
TL;DR: It is shown how the sliding window technique lends itself to high‐speed reconstruction, with each newly acquired echo used to quickly update the image on display to result in realtime MR image acquisition and reconstruction.
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Nuclear Magnetic Resonance Imaging of Acute Myocardial Infarction in Dogs: Alterations in Magnetic Relaxation Times
Charles B. Higgins,Robert J. Herfkens,Martin J. Lipton,Richard E. Sievers,Philip Sheldon,Leon Kaufman,Lawrence E. Crooks +6 more
TL;DR: Nuclear magnetic resonance imaging detects acute myocardial infarction as a positive image without contrast media and increased signal intensity of the infarct is related to increased hydrogen density and increased T2 relaxation time.
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MRI of brain iron
Burton P. Drayer,Peter C. Burger,R H Darwin,Stephen J. Riederer,Robert J. Herfkens,G. A. Johnson +5 more
TL;DR: The decreased signal intensity on T2-weighted images thus provides an accurate in vivo map of the normal distribution of brain iron and confirms an intermediate level of iron distribution in the striatum, and still lower levels in the cerebral gray and white matter.