Results 41 to 50 of about 577,063 (338)

Single beat determination of intraventricular systolic dyssynchrony in paitents with atrial fibrillation and systolic dysfunction [PDF]

open access: yes, 2013
Background:: Atrial fibrillation (AF) is the most common clinically significant cardiac arrhythmia. However, diagnosis of intraventricular dyssynchrony in patients with AF is difficult due to beat-to-beat variation. Additionally, evaluation of mechanical
Aghapour, Sevil   +5 more
core   +1 more source

The evaluation of cardiac functions in deep Trendelenburg position during robotic-assisted laparoscopic prostatectomy

open access: yesFrontiers in Medicine, 2023
ObjectiveThis study aimed to demonstrate the reliability of the cardiac cycle efficiency value through its correlation with longitudinal strain by observing the effect of the deep Trendelenburg position.DesignA prospective, observational study ...
Emir Kılınç   +5 more
doaj   +1 more source

The light and shadow of senescence and inflammation in cardiovascular pathology and regenerative medicine [PDF]

open access: yes, 2017
Recent epidemiologic studies evidence a dramatic increase of cardiovascular diseases, especially associated with the aging of the world population. During aging, the progressive impairment of the cardiovascular functions results from the compromised ...
Cavarretta, Elena   +9 more
core   +4 more sources

Learning the dynamics and time-recursive boundary detection of deformable objects [PDF]

open access: yes, 2008
We propose a principled framework for recursively segmenting deformable objects across a sequence of frames. We demonstrate the usefulness of this method on left ventricular segmentation across a cardiac cycle.
Cetin, Mujdat   +4 more
core   +4 more sources

Cardiac cycle efficiency during counterpulsation [PDF]

open access: yesThe Journal of Thoracic and Cardiovascular Surgery, 2013
n ...
Gelsomino, Sandro   +1 more
openaire   +3 more sources

Cyclic changes of blood echogenicity in high-frequency ultrasound [PDF]

open access: yes, 1991
Ultrasound images from human arteries obtained in vivo with an intravascular 30 MHz ultrasound imaging device show that blood echogenicity changes during the cardiac cycle.
Bom, N. (Klaas)   +5 more
core   +1 more source

Cardiovascular function and ballistocardiogram: a relationship interpreted via mathematical modeling [PDF]

open access: yes, 2019
Objective: to develop quantitative methods for the clinical interpretation of the ballistocardiogram (BCG). Methods: a closed-loop mathematical model of the cardiovascular system is proposed to theoretically simulate the mechanisms generating the BCG ...
Despins, Laurel   +9 more
core   +2 more sources

Cellular Classes in the Human Brain Revealed In Vivo by Heartbeat-Related Modulation of the Extracellular Action Potential Waveform [PDF]

open access: yes, 2020
Determining cell types is critical for understanding neural circuits but remains elusive in the living human brain. Current approaches discriminate units into putative cell classes using features of the extracellular action potential (EAP); in absence of
Anastassiou, Costas A.   +6 more
core  

Estimation of elastic and viscous properties of the left ventricle based on annulus plane harmonic behavior [PDF]

open access: yes, 2006
Assessment of left ventricular (LV) function with an emphasis on contractility has been a challenge in cardiac mechanics during the recent decades. The LV function is usually described by the LV pressurevolume (P-V) diagram. The standard P-V diagrams
Gharib, Morteza   +4 more
core   +1 more source

CardioCam: Leveraging Camera on Mobile Devices to Verify Users While Their Heart is Pumping [PDF]

open access: yes, 2019
With the increasing prevalence of mobile and IoT devices (e.g., smartphones, tablets, smart-home appliances), massive private and sensitive information are stored on these devices.
Chen, Yingying   +4 more
core   +1 more source

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