Results 21 to 30 of about 1,134,173 (194)

Dynamic Brain Connectivity in Resting-State FMRI Using Spectral ICA and Graph Approach: Application to Healthy Controls and Multiple Sclerosis

open access: yesDiagnostics, 2022
Multiple sclerosis (MS) is a neuroinflammatory disease that involves structural and functional damage to the brain. It changes the functional connectivity of the brain between and within networks. Resting-state functional magnetic resonance imaging (fMRI)
Amir Hosein Riazi   +2 more
doaj   +1 more source

Impact of filtration elements on bioelectrical signal [PDF]

open access: yes, 2016
Filtering of the wanted signal from the noise caused by power lines, magnetic pickup, interference from body movement, etc. in the field of medical data processing is a weighty problem of cardiography.
Babich, L.   +1 more
core   +1 more source

Correlation of arterial blood pressure to synchronous piezo, impedance and photoplethysmographic signal features

open access: yesCurrent Directions in Biomedical Engineering, 2017
In this paper we investigate which pulse wave pick-up technologies are well suited for blood pressure trend estimation. We use custom built hardware to acquire electrocardiographic, applanation-tonometric, photo- and impedance-plethysmographic signals ...
Pielmuş Alexandru-Gabriel   +6 more
doaj   +1 more source

An Experimental Platform for Tomographic Reconstruction of Tissue Images in Brightfield Microscopy

open access: yesSensors, 2023
(1) Background: Reviewing biological material under the microscope is a demanding and time-consuming process, prone to diagnostic pitfalls. In this study, a methodology for tomographic imaging of tissue sections is presented, relying on the idea that ...
Panteleimon Koudounas   +6 more
doaj   +1 more source

Cyst identification in retinal optical coherence tomography images using hidden Markov model

open access: yesScientific Reports, 2023
Optical Coherence Tomography (OCT) is a useful imaging modality facilitating the capturing process from retinal layers. In the salient diseases of retina, cysts are formed in retinal layers. Therefore, the identification of cysts in the retinal layers is
Niloofarsadat Mousavi   +5 more
doaj   +1 more source

Laser Based Mid-Infrared Spectroscopic Imaging – Exploring a Novel Method for Application in Cancer Diagnosis [PDF]

open access: yes, 2011
A number of biomedical studies have shown that mid-infrared spectroscopic images can provide both morphological and biochemical information that can be used for the diagnosis of cancer.
McCrow, Andrew, McCrow, Andrew
core   +1 more source

Continuous signal quality estimation for robust heart rate extraction from photoplethysmographic signals

open access: yesCurrent Directions in Biomedical Engineering, 2020
This study presents a novel method for estimating the signal quality of photoplethysmographic (PPG) signals. For this purpose a robust classifier is implemented and evaluated by using finger- and inear-PPG. A new procedure is proposed, which uses feature
Massmann Jonas   +2 more
doaj   +1 more source

ECG Signal Reconstruction on the IoT-Gateway and Efficacy of Compressive Sensing Under Real-time Constraints [PDF]

open access: yes, 2018
Remote health monitoring is becoming indispensable, though, Internet of Things (IoTs)-based solutions have many implementation challenges, including energy consumption at the sensing node, and delay and instability due to cloud computing.
Alinier, Guillaume   +7 more
core   +4 more sources

A Fast Multimodal Ectopic Beat Detection Method Applied for Blood Pressure Estimation Based on Pulse Wave Velocity Measurements in Wearable Sensors

open access: yesSensors, 2017
Automatic detection of ectopic beats has become a thoroughly researched topic, with literature providing manifold proposals typically incorporating morphological analysis of the electrocardiogram (ECG).
Maik Pflugradt   +3 more
doaj   +1 more source

Red-lesion extraction in retinal fundus images by directional intensity changes’ analysis

open access: yesScientific Reports, 2021
Diabetic retinopathy (DR) is an important retinal disease threatening people with the long diabetic history. Blood leakage in retina leads to the formation of red lesions in retina the analysis of which is helpful in the determination of severity of ...
Maryam Monemian, Hossein Rabbani
doaj   +1 more source

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