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Showing 1 to 20 of 36 for “"bioimpedance"”.
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Bioimpedance spectroscopy of breast cancer cells: A microsystems approach
Bioimpedance presents a versatile, label-free means of monitoring biological cells and their responses to physical, chemical and biological stimuli. Breast cancer is the second most common type of cancer among women in the United States. Although significant progress has been made in diagnosis and …
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A portable bioimpedance spectroscopy system for congestive heart failure management
… steps toward developing a compression sock based bioimpedance monitoring system for patients with CHF to help reduce readmission rates. The primary goals of the thesis were to better understand the calf bioimpedance measurement in a controlled environment (hemodialysis) and to develop portable …
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A Microfabricated Bioimpedance Sensor with Enhanced Sensitivity for Early Breast Cancer Detection
Bioimpedance is the term given to the complex impedance value that is characteristic of the resistance that biological cells offer to the flow of electric current. The objective of this study is to analyze the differences in the bioimpedance of highly metastatic MDA-MB-231 and normal MCF 10A breast …
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Validity of Bioimpedance as a Measure of Body Fat in High School Wrestlers
Background: In recent years several state high school athletic association have investigated methods to ensure the health and safety of high school wrestlers. One method implemented by the National Collegiate Athletic Association requires the prediction of minimum weight (MW) prior to the …
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The utility of bioimpedance cardiography in assessing the influence of obstructive sleep apnea hypopnea syndrome on cardiac function
… simulated sleep apnea event using a new improved bioimpedance cardiography system. Methods: Fifteen apparently healthy males were tested on three different days in a protocol requiring their performance of two 15 sec and two 30 sec forced and sustained inspiratory efforts against a closed …
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Desenvolvimento de hardware para análise de bioimpedância em banda larga
The bioimpedance spectroscopy is a technique that allows the biological tissue research from its electrical properties. The applications include body composition, research in cancer cells, bioimpedance tomography and others. This paper realizes the development of a bioimpedance analyzer for …
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Hybrid Nanostructured Textile Bioelectrode for Unobtrusive Health Monitoring
… complete ECG waveform, EEG or measurement of bioimpedance. Because of their improved sensitivity these hybrid nanostructured dry electrodes can be applied to measurement of ECG and bioimpedance with very low baseline noise. These textile based electrodes can be seamlessly integrated into …
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Quantitative biomarkers for tissue characterization
… Additional metrics investigated include bioimpedance and functional tests specifically for muscle health quantification. Diagnosing and monitoring of health of muscle and liver tissue is the motivating clinical need. These proposed metrics and techniques are noninvasive, quantitative, and …
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Utilization Of B-Mode Ultrasound As A Body Fat Estimate In Collegiate Football Players
… (3C-W) model of Siri (1961), using Bioimpedance spectroscopy (BIS) to estimate total body water (TBW) and air-displacement plethysmography (BODPOD<sup>®</sup>) to determine body density (Db). Pearson’s product-moment correlation analyses were run to determine between …
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Ultrasound measurements on the inferior vena cava by renal nursing staff for assessment and management of intravascular volume status in haemodialysis patients
… period and (4) attain concurrent IVC-US and bioimpedance spectroscopy measurements on 30 patients during their haemodialysis treatment and to compare these findings with their intravascular volume status using the traditional clinical nursing assessment method. Materials and Methods: To …
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Bioelectrical impedance analysis as a predictor of fish health and energy content in juvenile rainbow trout (Oncorhynchus mykiss)
… of the fasting period and once every week after. Bioimpedance was measured along the dorsal, lateral and ventral axis of each fish. Tissue from each fish was obtained during sampling and analyzed afterward for energy content using bomb calorimetry. The results of this BIA study demonstrated a …
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Impedance Changes in Biceps Brachii Due to Isometric Contractions and Muscle Fatigue Using Electrical Impedance Myography (EIM)
… changes using a quick, pain-free, and portable bioimpedance device.</p>
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Development of a novel probe integrated with a micro-structured impedance sensor for the detection of breast cancer
… focuses on the development of an innovative bioimpedance device for the detection of breast cancer using electrical impedance as the detection method. The ability for clinicians to detect and treat cancerous lesions as early as possible results in improved patient outcomes and can reduce the …
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Estado nutricional, sarcopenia e funcionalidade em idosas residentes na comunidade
… waist-height ratio, and muscle mass measured by bioimpedance) and functional data (six-minute walk test). Results: The mean age of the sample was 67 ± 8.0 years. Most of the elderly women did not practice physical activity (59%), had at least elementary school (38%), received up to two minimum …
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Single frequency whole-body impedance studies in children with diarrhoeal disease and development of a variable frequency system
… normal group. In addition a variable frequency bioimpedance analyser was designed and tested. It was found to have an error of less than 1 % over the frequency range 1 to 100 kHz. The device was evaluated on 11 normal and dehydrated children. Four dehydrated children were tested before and after …
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Partial Gravity Load Simulation Using Mechanical Off-Loading and Lower Body Negative Pressure
… body fluid shifts as measured by segmental leg bioimpedance, reduced intraocular pressure, and generated ground reaction forces similar to standing in 1G. These findings support the complementary use of Earth-based analog systems to simulate partial gravity and wearable devices to simulate Earth …
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Genetics of Obesity In Starr County, Texas Mexican Americans
… several aspects of obesity including BMI, bioimpedance to estimate percent body fat, and waist, hip, and arm circumferences. By using multivariate approaches to leverage the array of obesity measures, we have better captured both the amount of adipose tissue and the location of fat …
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Development of a bio-impedance measurement system for bladder monitoring
… the current challenges and designing a bioimpedance measurement system, this thesis employs a vertical monitoring method, as a feasibility study, to increase the sensitivity of the measurement of impedance variation related to bladder fullness. Also, it employs a separate mechanism with …
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A plethysmographic device for determining human body volume and body density
… has been carried out using underwater weighing, bioimpedance and skinfold analyses and the error of measurement assessed. It appears that the described plethysmographic method is capable of measuring body volume and thus compares favourably to the underwater weighing method. Even though other …
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