Results 41 to 50 of about 345,466 (293)

Electrical Impedance Tomography

open access: yesBritish Journal of Radiology, 1997
Electrical impedance tomography (EIT) is a technique which allows cross-sectional images related to the local electrical impedance within an object to be reconstructed from sets of measurements made on its surface. The main drive behind the development of EIT has been its possible application in medical imaging, as biological tissues are known to ...
openaire   +2 more sources

Lorentz Force Electrical Impedance Tomography

open access: yes, 2013
This article describes a method called Lorentz Force Electrical Impedance Tomography. The electrical conductivity of biological tissues can be measured through their sonication in a magnetic field: the vibration of the tissues inside the field induces an
Chapelon, Jean-Yves   +3 more
core   +2 more sources

Signal calibration for an electrical impedance mammography system [PDF]

open access: yes, 2010
Electrical Impedance Tomography (EIT) technology has been applied clinically since the 1980s. Numerous papers have addressed a variety of systematic error sources and indicated different calibration methods.
Béqo, Nevis   +6 more
core   +1 more source

Past, present, and future of electrical impedance tomography and myography for medical applications: a scoping review

open access: yesFrontiers in Bioengineering and Biotechnology
This scoping review summarizes two emerging electrical impedance technologies: electrical impedance myography (EIM) and electrical impedance tomography (EIT).
Lea Youssef Baby   +5 more
doaj   +1 more source

Practical Characterization of Cell-Electrode Electrical Models in Bio-Impedance Assays [PDF]

open access: yes, 2018
This paper presents the fitting process followed to adjust the parameters of the electrical model associated to a cell-electrode system in Electrical Cell-substrate Impedance Spectroscopy (ECIS) technique, to the experimental results from cell-culture ...
Daza Navarro, María Paula   +7 more
core   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

Ex vivo electrical bioimpedance measurements and Cole modelling on the porcine colon and rectum

open access: yesScientific Reports
Different pathological changes in the large intestine wall, associated with the development of different chronic diseases, including colorectal cancer, could be reflected in electrical bioimpedance readings. Thickness and composition of the mucus bilayer
S. A. Jaimes-Morales   +2 more
doaj   +1 more source

A Comparative Study of Two Fractional-Order Equivalent Electrical Circuits for Modeling the Electrical Impedance of Dental Tissues

open access: yesEntropy, 2020
Background: Electrical impedance spectroscopy (EIS) is a fast, non-invasive, and safe approach for electrical impedance measurement of biomedical tissues.
Norbert Herencsar   +3 more
doaj   +1 more source

Electrical impedance of acupuncture meridians: the relevance of subcutaneous collagenous bands. [PDF]

open access: yesPLoS ONE, 2010
The scientific basis for acupuncture meridians is unknown. Past studies have suggested that acupuncture meridians are physiologically characterized by low electrical impedance and anatomically associated with connective tissue planes.
Andrew C Ahn   +5 more
doaj   +1 more source

Silicon switching transistor with high power and low saturation voltage [PDF]

open access: yes, 1973
Assembly of two individually encapsulated silicon-chip transistors produces silicon power-transistor that has low electrical resistance and low thermal impedance.
Ferree, H.   +2 more
core   +1 more source

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