Results 161 to 170 of about 103,955 (369)

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

Journal of Magnetic Resonance Imaging, EarlyView.
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

On recurring extra systoles and their relation to fibrillation [PDF]

, 1921
S. de Boer
openalex   +1 more source

Systoles on S1 × Sn

Differential Geometry and its Applications, 1997
AbstractThere is no intersystolic inequality syst1 systn ⩽, const Vol on S1 × Sn if n is greater or equal to two.
openaire   +2 more sources

Hypertrophic cardiomyopathy combined with renal and adrenal aplasia in a male with Noonan syndrome from RAF1 variant

ESC Heart Failure, EarlyView.
Ying Wang, Guizhou Ma, Dianyu Cai, Jierong Yao, Bingying Huang, Chaojian Wu, Xiaoling Liu, Zhixiong Cai   +7 more
wiley   +1 more source

Fetal Cardiovascular Magnetic Resonance: History, Current Status, and Future Directions

Journal of Magnetic Resonance Imaging, EarlyView.
Fetal cardiovascular magnetic resonance imaging (MRI) has emerged as a complementary modality for prenatal imaging in suspected congenital heart disease. Ongoing technical improvements extend the potential clinical value of fetal cardiovascular MRI.
Dominika Suchá, Anneloes E. Bohte, Pim van Ooij, Tim Leiner, Eric M. Schrauben, Heynric B. Grotenhuis   +5 more
wiley   +1 more source

Systolic volume and complexity of 3-manifolds [PDF]

arXiv, 2015
In this paper, we prove that the systolic volume of a closed aspherical 3-manifold is bounded below in terms of complexity. Systolic volume is defined as the optimal constant in a systolic inequality. Babenko showed that the systolic volume is a homotopy invariant.
arxiv  

Studies Made By Simulating Systole at Necropsy [PDF]

, 1954
Isaac Starr, Truman G. Schnabel, S. I. Askovitz, A. Frederick Schild   +3 more
openalex   +1 more source

Free‐Breathing Ungated Radial Simultaneous Multi‐Slice Cardiac T1 Mapping

Journal of Magnetic Resonance Imaging, EarlyView.
Background Modified Look‐Locker imaging (MOLLI) T1 mapping sequences are acquired during breath‐holding and require ECG gating with consistent R‐R intervals, which is problematic for patients with atrial fibrillation (AF). Consequently, there is a need for a free‐breathing and ungated framework for cardiac T1 mapping.
Johnathan V. Le, Jason K. Mendes, Konstantinos Sideris, Erik Bieging, Spencer Carter, Josef Stehlik, Edward V. R. DiBella, Ganesh Adluru   +7 more
wiley   +1 more source

The mechanism of mitral regurgitant jets identified by 3-dimensional transesophageal echocardiography

Open Medicine, 2018
This study is a case report, which presents a case of severe mitral regurgitation in a 77-year-old man. Two-dimensional transesophageal echocardiography (TEE), regurgitant jets directed anteriorly in early systole and centrally to laterally in late ...
Iida Ryoji, Aono Mayu, Choy Jonathan
doaj   +1 more source

The (2,4,5) triangle Coxeter group is not systolic [PDF]

arXiv, 2017
We show that the (2,4,5) triangle Coxeter group is not systolic.
arxiv