Results 61 to 70 of about 226,602 (272)
Automated evaluation of diaphragm configuration based on chest CT in COPD patients
European Radiology ExperimentalBackground Severe chronic obstructive pulmonary disease (COPD) often results in hyperinflation and flattening of the diaphragm. An automated computed tomography (CT)-based tool for quantifying diaphragm configuration, a biomarker for COPD, was developed ...
Jens T. Bakker +8 more
doaj +1 more source
Development of low frequencies, insulating thick diaphragms for power MEMS applications [PDF]
Sensors and Actuators A: Physical, Volume 189, January 2013, Pages
370-379, 2013 Major challenges of micro thermal machines are the thermal insulation and mechanical tolerance in the case of sliding piston. Switching from piston to membrane in microengines can alleviate the latest and lead to planar architectures. However, the thermal isolation would call for very thick structures which are associated to too high resonant ...
arxiv +1 more source
Diaphragm as an anatomic surrogate for lung tumor motion [PDF]
, 2009 Lung tumor motion due to respiration poses a challenge in the application of modern three-dimensional conformal radiotherapy. Direct tracking of the lung tumor during radiation therapy is very difficult without implanted fiducial markers. Indirect tracking relies on the correlation of the tumor's motion and the surrogate's motion.
arxiv +1 more source
Investigation into diaphragm flexibility using shear wall
Građevinar, 2014 The diaphragm stiffness has a significant influence on the structural responses. Typically engineers assume those diaphragm are rigid. This assumption decreases the degree of freedom and provides easier analysis. But diaphragm damages in past earthquakes,
Mohammad Ahmadi +2 more
doaj +1 more source
Stability of bakeable capacitance diaphragm gauges [PDF]
arXiv, 2021 Here, we study the stability of capacitance diaphragm gauges. We focus on their stability before and after a controlled series of bakes. We find that baking results in appreciable shifts of the zero offset, but note that these can easily be corrected at time of use.
arxiv
Positive End‐Expiratory Pressure Ventilation Induces Longitudinal Atrophy in Diaphragm Fibers
American Journal of Respiratory and Critical Care Medicine, 2018 Rationale: Diaphragm weakness in critically ill patients prolongs ventilator dependency and duration of hospital stay and increases mortality and healthcare costs.
J. Lindqvist +19 more
semanticscholar +1 more source
A patient-specific respiratory model of anatomical motion for radiation treatment planning [PDF]
Med. Phys. 34, 4772 (2007), 2007 Modeling of respiratory motion is important for a more accurate understanding and accounting of its effect on dose to cancers in the thorax and abdomen by radiotherapy. We have developed a model of respiration-induced organ motion in the thorax, without the commonly adopted assumption of repeatable breath cycles.
arxiv +1 more source
Annals of Intensive Care, 2018 BackgroundDiaphragm dysfunction is defined by a value of twitch tracheal pressure in response to magnetic phrenic stimulation (twitch pressure) amounting to less than 11 cmH2O.
M. Dres +8 more
semanticscholar +1 more source
Jixie chuandong, 2014 The diaphragm is the key component in diaphragm coupling,and its material must be required within high strength,fatigue durability,heat resistance and corrosion resistance.In some harsh conditions,the diaphragm coupling may be fail even scrap.The main ...
黄兴保, 王优强
doaj
Frontiers in Bioengineering and BiotechnologyIntroductionAssessing the influence of respiratory assistive devices on the diaphragm mobility is essential for advancing patient care and improving treatment outcomes.
Yan Zhang +15 more
doaj +1 more source