Results 111 to 120 of about 4,585,967 (340)

Log file‐based quality assurance method for respiratory gating system

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Background As medical linear accelerator technology advances, enabling higher dose rate deliveries, hypofractionation regimens has increased. This necessitates respiratory gating systems that synchronize radiation delivery with tumor position, requiring simple rigorous quality assurance (QA) to ensure treatment accuracy and patient safety ...
Wonjoong Cheon, Young Kyu Lee, Yunji Seol, Chan‐beom Park, Hong Qi Tan, Kyu Hye Choi, Young‐nam Kang, Byung Ock Choi   +7 more
wiley   +1 more source

Direct Estimation of Regional Wall Thicknesses via Residual Recurrent Neural Network [PDF]

arXiv, 2017
Accurate estimation of regional wall thicknesses (RWT) of left ventricular (LV) myocardium from cardiac MR sequences is of significant importance for identification and diagnosis of cardiac disease. Existing RWT estimation still relies on segmentation of LV myocardium, which requires strong prior information and user interaction.
arxiv  

Taking Context to Heart: Momentary Emotions, Menstrual Cycle, and Cardiac Autonomic Regulation [PDF]

, 2019
Background. Emotions have long been discussed in conjunction with the autonomic nervous system. Most research on heart-mood linkages does not consider sex differences or an evident underlying mechanism for sex differences- sex hormone levels.
Simon, Shauna
core  

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

, 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, Chan, Ray, Sun, Walter, Willsky, Alan S., Çetin, Müjdat   +4 more
core   +2 more sources

Pulse Pressure, White Matter Hyperintensities, and Cognition: Mediating Effects Across the Adult Lifespan

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives To investigate whether pulse pressure or mean arterial pressure mediates the relationship between age and white matter hyperintensity load and to examine the mediating effect of white matter hyperintensities on cognition. Methods Demographic information, blood pressure, current medication lists, and Montreal Cognitive Assessment ...
Jade Hannan, Sarah Newman‐Norlund, Natalie Busby, Sarah C. Wilson, Roger Newman‐Norlund, Chris Rorden, Julius Fridriksson, Leonardo Bonilha, Nicholas Riccardi   +8 more
wiley   +1 more source

Cardiac cycle modulates social pain

Biological Psychology
Social pain is a painful feeling evoked by social rejection, exclusion, or the loss of other important people. Previous research suggests that physical pain is reduced by increased signals from baroreceptors that monitor blood pressure. This pre-registered study investigated whether social pain is attenuated by increased baroafferent signals, as ...
Tsubasa, Izaki, Toshiyuki, Himichi, Michiko, Sakaki   +2 more
openaire   +3 more sources

Integrative Analysis of Calcium Cycling in Cardiac Muscle [PDF]

Circulation Research, 2000
Abstract —The control of intracellular calcium is central to regulation of contractile force in cardiac muscle. This review illustrates how analysis of the control of calcium requires an integrated approach in which several systems are considered.
Eisner, David, Choi, H. S., Díaz, M. E., O'Neill, Stephen, Trafford, A. W.   +4 more
openaire   +3 more sources

Plasma microRNA Signature as Predictive Marker of Clinical Response to Therapy During Multiple Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Despite the availability of effective therapies for Multiple Sclerosis (MS), the unpredictable nature of disease progression and the variability in individual treatment outcomes call for reliable biomarkers. This pilot study aims to investigate the potential of plasma circulating microRNAs (miRNAs) as predictive biomarkers for ...
Fortunata Carbone, Alessandra Colamatteo, Teresa Micillo, Gianmarco Abbadessa, Silvia Garavelli, Clorinda Fusco, Claudia Russo, Francesco Perna, Federica Garziano, Claudia La Rocca, Maria Mottola, Giorgia Teresa Maniscalco, Simona Bonavita, Antonio Luca Spiezia, Alessia Castiello, Roberta Lanzillo, Vincenzo Brescia Morra, Claudio Procaccini, Paola de Candia, Giuseppe Matarese   +19 more
wiley   +1 more source

Never in mitosis gene A related kinase-6 attenuates pressure overload-induced activation of the protein kinase B pathway and cardiac hypertrophy.

PLoS ONE, 2014
Cardiac hypertrophy appears to be a specialized form of cellular growth that involves the proliferation control and cell cycle regulation. NIMA (never in mitosis, gene A)-related kinase-6 (Nek6) is a cell cycle regulatory gene that could induce centriole
Zhouyan Bian, Haihan Liao, Yan Zhang, Qingqing Wu, Heng Zhou, Zheng Yang, Jinrong Fu, Teng Wang, Ling Yan, Difei Shen, Hongliang Li, Qizhu Tang   +11 more
doaj   +1 more source

On in-silico estimation of left ventricular end-diastolic pressure from cardiac strains [PDF]

2024 46th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), pp. 1-4
Left ventricular diastolic dysfunction (LVDD) is a group of diseases that adversely affect the passive phase of the cardiac cycle and can lead to heart failure. While left ventricular end-diastolic pressure (LVEDP) is a valuable prognostic measure in LVDD patients, traditional invasive methods of measuring LVEDP present risks and limitations ...
arxiv   +1 more source