Results 121 to 130 of about 149 (149)

3D Vortex‐Energetics in the Left Pulmonary Artery for Differentiating Pulmonary Arterial Hypertension and Pulmonary Venous Hypertension Groups Using 4D Flow MRI

Journal of Magnetic Resonance Imaging, Volume 61, Issue 5, Page 2130-2143, May 2025.
Background Pulmonary hypertension (PH) is a life‐threatening. Differentiation pulmonary arterial hypertension (PAH) from pulmonary venous hypertension (PVH) is important due to distinct treatment protocols. Invasive right heart catheterization (RHC) remains the reference standard but noninvasive alternatives are needed.
Mohammed S.M. Elbaz, Melika Shafeghat, Benjamin H. Freed, Roberto Sarnari, Zachary Zilber, Ryan Avery, Michael Markl, Bradley D. Allen, James Carr   +8 more
wiley   +1 more source

Reproducibility of Cardiac Multifrequency MR Elastography in Assessing Left Ventricular Stiffness and Viscosity

Journal of Magnetic Resonance Imaging, Volume 61, Issue 5, Page 2146-2154, May 2025.
Background Cardiac magnetic resonance elastography (MRE) shows promise in assessing the mechanofunctional properties of the heart but faces clinical challenges, mainly synchronization with cardiac cycle, breathing, and external harmonic stimulation.
Johannes Castelein, Amanda S. Duus, Pernille S. Bække, Ingolf Sack, Matthias S. Anders, Karen Kettless, Adam E. Hansen, Rudi A. J. O. Dierckx, Ole De Backer, Niels G. Vejlstrup, Morten A. V. Lund, Ronald J. H. Borra   +11 more
wiley   +1 more source

Aortic velocity measurements derived from phase‐contrast MRI are influenced by a cardiac implantable electronic device in both adult and pediatric human subjects

Magnetic Resonance in Medicine, Volume 93, Issue 5, Page 2099-2107, May 2025.
Abstract Purpose Overall there is a lack of evidence on the accuracy and precision of phase‐contrast (PC) MRI in patients with cardiac implantable electronic devices (CIEDs). The purpose of this study is to determine whether aortic velocity measurements are influenced by a CIED.
Huili Yang, Oluyemi B. Aboyewa, Gregory Webster, Dhaivat Shah, Laleh Golestanirad, Justin J. Baraboo, Michael Markl, Jeremy D. Collins, Bradley P. Knight, KyungPyo Hong, Amit R. Patel, Daniel C. Lee, Daniel Kim   +12 more
wiley   +1 more source

Third trimester fetal 4D flow MRI with motion correction

Magnetic Resonance in Medicine, Volume 93, Issue 5, Page 1969-1983, May 2025.
Abstract Purpose To correct maternal breathing and fetal bulk motion during fetal 4D flow MRI. Methods A Doppler‐ultrasound fetal cardiac‐gated free‐running 4D flow acquisition was corrected post hoc for maternal respiratory and fetal bulk motion in separate automated steps, with optional manual intervention to assess and limit fetal motion artifacts ...
Reagan M. Tompkins, Takashi Fujiwara, Eric M. Schrauben, Lorna P. Browne, Joost van Schuppen, Sally‐Ann Clur, Richard M. Friesen, Erin K. Englund, Alex J. Barker, Pim van Ooij   +9 more
wiley   +1 more source

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Systolic model and systolic geometry

1988., IEEE International Symposium on Circuits and Systems, 2003
The lack of a precise model for systolic algorithms has been hindering progress in the automatic synthesis of systolic arrays. The author proposes a model that encompasses a very large class of algorithms but is still restrictive enough so that mappings of such algorithms onto systolic architectures whose time performance is within a known factor of ...
openaire   +2 more sources

Translating systolic arrays into instruction systolic arrays

Proceedings of the 1988 ACM sixteenth annual conference on Computer science - CSC '88, 1988
An instruction systolic array is a programmable systolic array. Instructions and mask bits are pumped through the array as well as data. It offers cost-benefit advantages over systolic arrays because one array can be used for multiple applications.
Roy P. Pargas, Adrian Vrouwenvelder, Keith R. Allen   +2 more
openaire   +2 more sources

Systolic Click and Late Systolic Murmur in a Young Woman

Chest, 1974
An asymptomatic young woman with a systolic click and late systolic murmur is discussed. Phonocardiograms, multiple cardiograms, carotid tracing, and echocardiogram revealed a prolapse of the posterior mitral leaflet. Angiocardiogram confirmed the diagnosis made by use of the noninvasive methods.
Aldo A. Luisada, Pachalla K. Bhat
openaire   +3 more sources

Systolic Algorithms and Systolic Processors

1992
The systolic processing provides a possibility to solve a large number of standard problems on multicellular computing devices with autonomous cells. Interruptions by the host computer are necessary only for changing of the computing mode and occurs only a few times while solving the problem. They arise on the starting and final phases and sometimes on
openaire   +2 more sources

Systolic systems

1991
International ...
Darte, Alain, Robert, Yves, Risset, Tanguy   +2 more
openaire   +3 more sources

Systolic hypertension: An overview

American Heart Journal, 2005
This article provides a descriptive survey of the problem of systolic hypertension. Throughout, 2 types of systolic hypertension will be described: isolated systolic hypertension, which is the most common type of elevated blood pressure in the elderly, and uncontrolled but treated hypertension, which is characterized by elevations in systolic blood ...
Stanley S. Franklin, Todd F. Griffith, Preston S. Klassen, Preston S. Klassen   +3 more
openaire   +3 more sources