Zobrazeno 1 - 10
of 107
pro vyhledávání: '"Ivan Frollo"'
Publikováno v:
Engineering Proceedings, Vol 27, Iss 1, p 51 (2022)
The paper describes the development, testing, and verification of practical usability of the indirect cuffless method for estimation of arterial blood pressure (ABP) values from the photo-plethysmography (PPG) signal sensed by the optical PPG sensor.
Externí odkaz:
https://doaj.org/article/3a80061a736c40c0b22b7c4842ee737f
Publikováno v:
Sensors, Vol 22, Iss 10, p 3769 (2022)
This paper is focused on investigation of three developed prototypes of sensors based on the photoplethysmography (PPG) principle for continual measurement of the PPG signal in the magnetic field environment with the inherent radiofrequency and elect
Externí odkaz:
https://doaj.org/article/e4447bec12a541d3892c079363ca2081
Autor:
Patrik Krumpolec, Radka Klepochová, Ivica Just, Marjeta Tušek Jelenc, Ivan Frollo, Jozef Ukropec, Barbara Ukropcová, Siegfried Trattnig, Martin Krššák, Ladislav Valkovič
Publikováno v:
Frontiers in Physiology, Vol 11 (2020)
Purpose: Aging is associated with changes in muscle energy metabolism. Proton (1H) and phosphorous (31P) magnetic resonance spectroscopy (MRS) has been successfully applied for non-invasive investigation of skeletal muscle metabolism. The aim of this
Externí odkaz:
https://doaj.org/article/38e4e443c92f4211ac9f88a1038fe03c
Publikováno v:
Applied Sciences, Vol 11, Iss 24, p 11748 (2021)
This paper deals with two modalities for stress detection and evaluation—vowel phonation speech signal and photo-plethysmography (PPG) signal. The main measurement is carried out in four phases representing different stress conditions for the teste
Externí odkaz:
https://doaj.org/article/6b469b3ce9f640ed868ee87ccdc98a97
Publikováno v:
Applied Sciences, Vol 11, Iss 20, p 9651 (2021)
The interaction of an external magnetic field with magnetic objects affects their response and is a fundamental property for many biomedical applications, including magnetic resonance and particle imaging, electromagnetic hyperthermia, and magnetic t
Externí odkaz:
https://doaj.org/article/cbde040623274f6ab3a17d6bedcb60ff
Publikováno v:
Sensors, Vol 20, Iss 12, p 3532 (2020)
The paper describes first-step experiments with parallel measurement of cardiovascular parameters using a photoplethysmographic optical sensor and standard portable blood pressure monitors in different situations of body relaxation and stimulation. C
Externí odkaz:
https://doaj.org/article/8e80e112af2b4981bec054d047c87362
Publikováno v:
Sensors, Vol 19, Iss 19, p 4198 (2019)
A system of gradient coils of the magnetic resonance imaging (MRI) device produces significant vibration and noise. Energetic relations of these phenomena are analyzed depending on MRI scan parameters (sequence type, repetition time (TR), echo time (
Externí odkaz:
https://doaj.org/article/966d2ccfcfce40888934e814e506da6f
Publikováno v:
Sensors, Vol 18, Iss 4, p 1112 (2018)
This article compares open-air and whole-body magnetic resonance imaging (MRI) equipment working with a weak magnetic field as regards the methods of its generation, spectral properties of mechanical vibration and acoustic noise produced by gradient
Externí odkaz:
https://doaj.org/article/f26a1c331d154e7ca559b1745be1eec7
Publikováno v:
International Journal of Nonlinear Sciences and Numerical Simulation. 23:971-983
Magnetic carriers for guiding, delivery, and capturing of drugs to desired place attract interest in the field of smart treatment of various pathological conditions. Presented paper, therefore, deals with one such application with the theoretical mod
Publikováno v:
Measurement Science Review. 22:80-83
This article describes the analysis of the NMR (Nuclear Magnetic Resonance) stabilizer signal. Magnetic field of the standard is created using an electromagnet. Sufficiently high stability of the magnetic field is achieved with the help of a stabiliz