Results 21 to 30 of about 42,032 (254)

Molecular Pathology of Sodium Channel Beta-Subunit Variants

Frontiers in Pharmacology, 2021
The voltage-gated Na+ channel regulates the initiation and propagation of the action potential in excitable cells. The major cardiac isoform NaV1.5, encoded by SCN5A, comprises a monomer with four homologous repeats (I-IV) that each contain a voltage ...
Paweorn Angsutararux, Wandi Zhu, Wandi Zhu, Taylor L. Voelker, Jonathan R. Silva   +4 more
doaj   +1 more source

Detection of Cardiac Quiescence From B-Mode Echocardiography Using a Correlation-Based Frame-to-Frame Deviation Measure

IEEE Journal of Translational Engineering in Health and Medicine, 2013
Two novel methods for detecting cardiac quiescent phases from B-mode echocardiography using a correlation-based frame-to-frame deviation measure were developed.
Carson A. Wick, James H. Mcclellan, Lakshminarayan Ravichandran, Srini Tridandapani   +3 more
doaj   +1 more source

Dynamic fetal cardiovascular magnetic resonance imaging using Doppler ultrasound gating

Journal of Cardiovascular Magnetic Resonance, 2018
Background Fetal cardiovascular magnetic resonance (CMR) imaging may provide a valuable adjunct to fetal echocardiography in the evaluation of congenital cardiovascular pathologies.
Fabian Kording, Jin Yamamura, Manuela Tavares de Sousa, Christian Ruprecht, Erik Hedström, Anthony H. Aletras, P. Ellen Grant, Andrew J. Powell, Kai Fehrs, Gerhard Adam, Hendrik Kooijman, Bjoern P. Schoennagel   +11 more
doaj   +1 more source

A Two-Stage Model Identification Method for Simulation of Electrical Wave Propagation in Heart Tissue

IEEE Access, 2020
Computer modeling and simulation is fast-moving towards clinical applications to advance cardiac diagnosis and aid treatment planning. As cardiac models become more popular and useful, the need to tailor these models for individual subjects has grown ...
Zhiyong Hu, Yuncheng Du, Dongping Du
doaj   +1 more source

Biophysical Characterization of a Novel SCN5A Mutation Associated With an Atypical Phenotype of Atrial and Ventricular Arrhythmias and Sudden Death

Frontiers in Physiology, 2020
BackgroundSudden cardiac death (SCD) is an unexpected death that occurs within an hour of the onset of symptoms. Hereditary primary electrical disorders account for up to 1/3 of all SCD cases in younger individuals and include conditions such as ...
Mohammad-Reza Ghovanloo, Joseph Atallah, Carolina A. Escudero, Peter C. Ruben   +3 more
doaj   +1 more source

Accelerometer-Based Method for Extracting Respiratory and Cardiac Gating Information for Dual Gating during Nuclear Medicine Imaging

International Journal of Biomedical Imaging, 2014
Both respiratory and cardiac motions reduce the quality and consistency of medical imaging specifically in nuclear medicine imaging. Motion artifacts can be eliminated by gating the image acquisition based on the respiratory phase and cardiac ...
Mojtaba Jafari Tadi, Tero Koivisto, Mikko Pänkäälä, Ari Paasio   +3 more
doaj   +1 more source

Motion-correction strategies for enhancing whole-body PET imaging

Frontiers in Nuclear Medicine
Positron Emission Tomography (PET) is a powerful medical imaging technique widely used for detection and monitoring of disease. However, PET imaging can be adversely affected by patient motion, leading to degraded image quality and diagnostic capability.
James Wang, James Wang, Dalton Bermudez, Weijie Chen, Weijie Chen, Divya Durgavarjhula, Divya Durgavarjhula, Caitlin Randell, Caitlin Randell, Meltem Uyanik, Meltem Uyanik, Alan McMillan, Alan McMillan, Alan McMillan, Alan McMillan, Alan McMillan   +15 more
doaj   +1 more source

A realistic 3-D gated cardiac phantom for quality control of gated myocardial perfusion SPET: the Amsterdam gated (AGATE) cardiac phantom [PDF]

European Journal of Nuclear Medicine and Molecular Imaging, 2003
A realistic 3-D gated cardiac phantom with known left ventricular (LV) volumes and ejection fractions (EFs) was produced to evaluate quantitative measurements obtained from gated myocardial single-photon emission tomography (SPET). The 3-D gated cardiac phantom was designed and constructed to fit into the Data Spectrum anthropomorphic torso phantom ...
Visser, Jacco J. N., Sokole, Ellinor Busemann, Verberne, Hein J., Habraken, Jan B. A., van de Stadt, Huybert J. F., Jaspers, Joris E. N., Shehata, Morgan, Heeman, Paul M., van Eck-Smit, Berthe L. F.   +8 more
openaire   +2 more sources

Cardiac and respiratory-gated volumetric murine ultrasound [PDF]

The International Journal of Cardiovascular Imaging, 2017
Current cardiovascular ultrasound mainly employs planar imaging techniques to assess function and physiology. These techniques rely on geometric assumptions, which are dependent on the imaging plane, susceptible to inter-observer variability, and may be inaccurate when studying complex diseases.
Arvin H, Soepriatna, Frederick W, Damen, Pavlos P, Vlachos, Craig J, Goergen   +3 more
openaire   +2 more sources

Coregistration and Spatial Compounding of Optoacoustic Cardiac Images via Fourier Analysis of Four-Dimensional Data

Applied Sciences, 2020
Volumetric optoacoustic tomography has been shown to provide unprecedented capabilities for ultrafast imaging of cardiovascular dynamics in mice. Three-dimensional imaging rates in the order of 100 Hz have been achieved, which enabled the visualization ...
Hongtong Li, Ivana Ivankovic, Jiao Li, Daniel Razansky, Xosé Luís Deán-Ben   +4 more
doaj   +1 more source