Results 31 to 40 of about 568,260 (340)

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

Intraoperative management of critical arrhythmia [PDF]

open access: yesKorean Journal of Anesthesiology, 2017
The incidence of intraoperative arrhythmia is extremely high, and some arrhythmias require clinical attention. Therefore, it is essential for the anesthesiologist to evaluate risk factors for arrhythmia and understand their etiology, electrophysiology ...
Chang Hee Kwon, Seong-Hyop Kim
doaj   +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

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

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

Tbx20 Is Required in Mid-Gestation Cardiomyocytes and Plays a Central Role in Atrial Development. [PDF]

open access: yes, 2018
RationaleMutations in the transcription factor TBX20 (T-box 20) are associated with congenital heart disease. Germline ablation of Tbx20 results in abnormal heart development and embryonic lethality by embryonic day 9.5.
Aneas, Ivy   +12 more
core   +2 more sources

Regional differences in APD restitution can initiate wavebreak and re-entry in cardiac tissue: A computational study [PDF]

open access: yes, 2005
Background Regional differences in action potential duration (APD) restitution in the heart favour arrhythmias, but the mechanism is not well understood.
A Garfinkel   +37 more
core   +3 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  

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

Segmentation of the evolving left ventricle by learning the dynamics [PDF]

open access: yes, 2008
We propose a method for recursive segmentation of the left ventricle (LV) across a temporal sequence of magnetic resonance (MR) images. The approach involves a technique for learning the LV boundary dynamics together with a particle-based inference ...
Cetin, Mujdat   +4 more
core   +2 more sources

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