Results 151 to 160 of about 73,555 (300)

Intracellular calcium dynamics of lymphatic endothelial and muscle cells co-cultured in a Lymphangion-Chip under pulsatile flow. [PDF]

Analyst, 2022
Selahi A, Chakraborty S, Muthuchamy M, Zawieja DC, Jain A.   +4 more
europepmc   +1 more source

Impact of Partial Echo on 4D Flow MRI: The Insight From Synthetic MRI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose The aim of this study is to investigate the impact of the partial echo on 4D flow MRI sequences thanks to in silico coupled MRI‐CFD (computational fluid dynamics) simulations. Methods Two sequences are studied: one with a full echo (FE) and another using partial echo (PE) with an echo symmetry fraction of 0.75.
Morgane Garreau, Thomas Puiseux, Ramiro Moreno, Solenn Toupin, Daniel Giese, Franck Nicoud, Simon Mendez   +6 more
wiley   +1 more source

Efficacy of Pulsatile Flow Perfusion in Adult Cardiac Surgery: Hemodynamic Energy and Vascular Reactivity. [PDF]

J Clin Med, 2021
Dodonov M, Onorati F, Luciani GB, Francica A, Tessari M, Menon T, Gottin L, Milano AD, Faggian G.   +8 more
europepmc   +1 more source

Effects and Correction of Patient Bulk Motion in Cranial DENSE MRI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Applications of DENSE to measure cardiac driven brain tissue pulsations are highly sensitive to bulk patient motion due to the sub‐millimeter displacement encoding required, limiting its accuracy, reproducibility, and use in pediatric and aging populations.
Caroline A. Doctor, Leonardo A. Rivera‐Rivera, Laura B. Eisenmenger, Sterling C. Johnson, Kevin M. Johnson   +4 more
wiley   +1 more source

Ultrafast Blood T1 Measurement Using Golden Angle Rotated Spiral k‐t Sparse Parallel Imaging (GASSP): Evaluations in Both Pre‐ and Post‐Contrast Conditions

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Blood T1 is a key parameter for hemodynamic quantification in both non‐contrast‐ and contrast‐enhanced imaging. Individual vessel T1 has been measured using a modified Look–Locker scheme with multi‐shot EPI or FLASH in high spatial resolution, requiring ∼1 min.
Zechen Xu, Feng Xu, Qin Qin, Dan Zhu
wiley   +1 more source

Are physiological oscillations physiological?

The Journal of Physiology, EarlyView., 2023
Abstract figure legend Mechanisms and functions of physiological oscillations. Abstract Despite widespread and striking examples of physiological oscillations, their functional role is often unclear. Even glycolysis, the paradigm example of oscillatory biochemistry, has seen questions about its oscillatory function.
Lingyun (Ivy) Xiong, Alan Garfinkel
wiley   +1 more source

Modelling Motion‐Induced Signal Corruption in Steady‐State Diffusion MRI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Diffusion‐weighted steady‐state free precession (DW‐SSFP) is a diffusion imaging sequence achieving high SNR efficiency. A key challenge for in vivo DW‐SSFP is the sequence's severe motion sensitivity, currently limiting investigations to low or no motion regimes.
Benjamin C. Tendler, Wenchuan Wu, Karla L. Miller, Aaron T. Hess   +3 more
wiley   +1 more source

In Vitro Hemocompatibility of the BiVACOR Total Artificial Heart in Continuous and Pulsatile Flow. [PDF]

Artif Organs
McNamee AP, Timms D, Nestler F, Bartnikowski N, Smith A, Tansley GD, Simmonds MJ.   +6 more
europepmc   +1 more source

Pulsatile flow in descending aorta: Can coarctation of aorta be ruled out by transesophageal echocardiography? [PDF]

Ann Card Anaesth, 2021
Diwakar A, Chalam KS, Hiremath CS, Dash PK.   +3 more
europepmc   +1 more source

Respiration Can Trigger Cerebrovascular Reactivity: A Novel Method to Quantify Cerebrovascular Resistance Dynamics Using Real‐Time Phase‐Contrast MRI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To directly quantify respiration‐driven cerebrovascular resistance dynamics (CRD) using a gas‐free MRI framework based on the internal‐to‐external artery carotid flow ratio (ratio_Q). Theory and Methods Two independent datasets (n = 10 and n = 17) were used to evaluate repeatability and to compare breathing conditions.
Pan Liu, Qiuting Wen, Kimi Owashi, Jean‐Marc Constans, Cyrille Capel, Olivier Balédent   +5 more
wiley   +1 more source