There exist several positively and negatively charged electrolytes or ions in human blood, urine, other body fluids. Tests that measure the concentration of these clinics are performed using a more affordable, portable, disposable potentiometric sensing method with few sample volumes, which requires use ion-selective electrodes (ISEs) reference electrodes. This review summarily descriptively presents progressive developments applications ion selective medical laboratory electrolytic tests,...

A method based on wavelet packet best basis decomposition (WPBBD) is investigated for the purpose of extracting features electroencephalogram signals produced during motor imagery tasks in brain-computer interfaces. The includes following three steps. (1) Original are decomposed by transform (WPT) and a library can be formed. (2) classification selected from library. (3) Subband energies included used as effective features. Three different discriminated using WPBBD produces 70.3% accuracy,...

The computational fractal dimension of human colonic pressure activity acquired by a telemetric capsule robot under normal physiological conditions was studied using the box-counting method. is numeric value that quantifies to measure how rough signal from nonlinear dynamics, rather than its amplitude or other linear statistical features. activities healthy subject during three typical periods were analysed. results showed might be with non-integer after it being integrated over time cumsum...

Heart failure is one of the major diseases endangering human life. As a transitional support treatment before heart transplantation, left ventricular assist device (LVAD) has significantly improved quality life and survival rate patients with end-stage failure. In automatic detection electrocardiogram (ECG), QRS wave groups most critical aspect, which affects correctness accuracy subsequent data analysis processing. The paper used from MIT-BIH database collected ECG as original number...

Venous leg ulcerations are a common problem, with high prevalence in the middle-aged and elderly population, more attention on research of their physical activities has been paid, as they have great effects blood circulation lower limb. With enough, appropriate training, chronic venous limb can be avoided alleviated, hypertension reduced effectively. The study deals activity tracking system for patients based three-axis accelerometer. uses accelerometer, microcontroller, wireless Bluetooth...

In clinics, especially in the emergency department, carbon dioxide (CO2) is considered as sixth vital sign evaluating a patient's medical status. However, its wide applications developing countries are dissatisfactory due to their high cost compared economic growth. order develop practical system for concentration detection of human exhaled CO2 gas our own, we studied principle based upon non-dispersive infrared (NDIR) measuring technique and related Lambert-Beer's equation carefully, gave...

Photoacoustic imaging (PAI) technology, characterized by its high resolution, minimal biological impact, and sensitivity, has become a cornerstone in biomedical research. Its application spans various domains, showing significant promise for disease diagnosis. Currently, the majority of PAI research is conducted using animal models, with human clinical applications still early development. This paper reviews fundamental principles explores use brain studies. It addresses current challenges...

Cardiovascular diseases (CVDs) affect components of the circulatory system responsible for transporting blood through vessels. The measurement mechanical force acting on walls vessels, as well flow between heartbeats and when heart is at rest, known pressure (BP). Regular assessment BP can aid in prevention early detection CVDs. In present research, a deep learning algorithm was developed to accurately calculate both (BP) rate (HR) by extracting relevant features from photoplethysmogram...

A robot system controlled by human thoughts is introduced in this paper. Aiming at the recognition problem of electroencephalogram (EEG) signals system, we present a novel pattern method. The method combines genetic algorithm (GA) with support vector machine (SVM). It includes two techniques. One that feature selection and model parameters SVM are optimized synchronously, which constitutes hybrid optimization. other optimization realized using GA. used to classify three types EEG system....

The switch-type Hall sensor is a magnetic based on the effect, which can accurately detect separation of two ends permanent magnets in new external ventricular drainage (EVD) device by detecting change field. structure magnet assembly includes and sensor. A finite element model established to visualize distribution field, simulation carried out Ansys Maxwell 3D. shows that flux density at their junction plane between reaches local minimum edge each pole maximum pull-in state, induction lines...

Background: Converting the two-dimensional (2D) cross-sectional photographs into an intuitive three-dimensional (3D) model is a basic task for medical imaging data auxiliary disease-linked diagnosis purpose. Methods: Reconstruction and visualization process of gastrointestinal includes image preparation, registration, segmentation, 3D surface-rendering reconstruction, implementation digital visualization. Results: Using toolkit (VTK), we implemented reconstruction tract, whose visualized can...

The colonic tissue is a complicated dynamic system and the activities it generates are composed of irregular segmental waves, which referred to as erratic fluctuations or spikes. They also highly with subunit fractal structure. traditional time-frequency domain statistics like averaged amplitude, motility index power spectrum, etc. insufficient describe such fluctuations. Thus box-counting dimension proposed scaling behaviors human pressure under physiological conditions studied. It shown...

This paper aims to learn about the quadratic phase coupling (QPC) behaviours of five different mental tasks electroencephalogram (EEG) signals. By overcoming shortcoming power spectrum, which provides no information, and taking advantage good characteristics higher order spectra, a method referred as 11/2-dimension spectrum (11/2-D spectrum) is proposed. The results show that 11/2-D capable nonlinear QPC analysis on EEG, considered be non-Gaussian random process; occur all typical although...

A wireless electromagnetic localization method for tracking a medical micro-device in the gastrointestinal tract has been proposed and prototype system developed. In system, several exc