Results 21 to 30 of about 502,047 (291)
Spectral method of photoplethysmogram processing for screening of atherosclerosis
Journal of Biomedical Photonics & Engineering, 2017 The paper is devoted to the analysis of the existing indicators for the diagnostic of arterial vessels condition and the development of new ones based on the contour analysis of the pulse wave. The performed analysis of the techniques used to process the
Anastasiya N. Markina +1 more
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Influence of cavity lifetime on high-finesse microcavity two-photon absorption photodetectors [PDF]
, 2007 For optical pulse incidence as compared with continuous-wave incidence, the enhancement of two-photon absorption inside a high-finesse planar microcavity is reduced, the pulse inside the cavity and the cavity spectrum are broadened.
Barry, Liam P. +5 more
core +1 more source
Assessment of pulse rate variability by the method of pulse frequency demodulation
BioMedical Engineering OnLine, 2005 Background Due to its easy applicability, pulse wave has been proposed as a surrogate of electrocardiogram (ECG) for the analysis of heart rate variability (HRV). However, its smoother waveform precludes accurate measurement of pulse-to-pulse interval by
Ohte Nobuyuki +4 more
doaj +1 more source
The refractive index and wave vector in passive or active media [PDF]
, 2009 Materials that exhibit loss or gain have a complex valued refractive index $n$. Nevertheless, when considering the propagation of optical pulses, using a complex $n$ is generally inconvenient -- hence the standard choice of real-valued refractive index ...
G. P. Agrawal +3 more
core +1 more source
Pulse Wave Analysis to Estimate Cardiac Output [PDF]
Anesthesiology, 2020 Pulse wave analysis enables cardiac output to be estimated continuously and in real time. Pulse wave analysis methods can be classified into invasive, minimally invasive, and noninvasive and into externally calibrated, internally calibrated, and uncalibrated methods.
Karim, Kouz +3 more
openaire +2 more sources
Traditional practices and recent advances in Nadi Pariksha: A comprehensive review
Journal of Ayurveda and Integrative Medicine, 2019 The significance of Nadi Pariksha is well understood and effectively used by Ayurveda practioners for assessing Tridoshas and various physiological and psychological states of the patient.
P. Venkata Giri Kumar +2 more
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Analysis of the Radial Pulse Wave and its Clinical Applications: A Survey
IEEE Access, 2021 The arterial pulse wave is a physiological signal which can reflect the function of the human cardiovascular system. Owing to the measurement being convenient and safe, radial pulse waves have been often used in noninvasive monitoring of human health ...
Jinzhong Yang +7 more
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BioMedical Engineering OnLine, 2018 Background Piezo-resistive pressure sensors are widely used for measuring pulse waves of the radial artery. Pulse sensors are generally fabricated with a cover layer because pressure sensors without a cover layer are fragile when they come into direct ...
Min-Ho Jun +3 more
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Artery Research, 2020 Background: Abdominal aortic aneurysm (AAA) is usually asymptomatic and has an extremely high mortality if rupture occurs. Therefore, early detection and intervention are important.
Tianqi Wang +2 more
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Abnormal wave reflections and left ventricular hypertrophy late after coarctation of the aorta repair [PDF]
, 2017 Patients with repaired coarctation of the aorta are thought to have increased afterload due to abnormalities in vessel structure and function. We have developed a novel cardiovascular magnetic resonance protocol that allows assessment of central ...
Khushnood, Abbas +7 more
core +2 more sources