Resistance exercise bands are a core component of any physical activity strengthening program. Strength training can mitigate the development sarcopenia, loss muscle mass or strength and function with aging. Yet, adherence such behavioral strategies in home-based setting fraught issues monitoring compliance. Our group developed Bluetooth-enabled resistance band capable transmitting data to an open-source platform. In this work, we application capture information real-time, conducted three...

Bio-electric impedance signatures arise primarily from differences in cellular morphologies within an organ and can be used to differentiate benign malignant pathologies, specifically the breast. Electrical tomography (EIT) is imaging modality that determines distribution tissue has been prior work map electrical properties of breast at signal frequencies ranging a few kHz 1 MHz. It suggested by extending frequency range, additional information clinical significance may obtained. We have,...

Electromagnetic (EM) breast imaging provides low-cost, safe and potentially a more specific modality for cancer detection than conventional systems. A primary difficulty in validating these EM modalities is that the true dielectric property values of particular being imaged are not readily available on an individual subject basis. Here, we describe our initial experience seeking to correlate tomographic studies with discrete point spectroscopy measurements properties tissue. The protocol...

Body-area networks of pervasive wearable devices are increasingly used for health monitoring, personal assistance, entertainment, and home automation. In an ideal world, a user would simply wear their desired set with no configuration necessary: the discover each other, recognize that they on same person, construct secure communications channel, to which attached. this paper we address portion vision by offering system unobtrusively recognizes person wearing it. Because it can user, our...

In this paper, we propose Auracle, a wearable earpiece that can automatically recognize eating behavior. More specifically, in free-living conditions, when and for how long person is eating. Using an off-the-shelf contact microphone placed behind the ear, Auracle captures sound of chewing as it passes through bone tissue head. This audio data then processed by custom analog/digital circuit board. To ensure reliable (yet comfortable) between skin, all hardware components are incorporated into...

Tissue electrical impedance is a function of its architecture and has been used to differentiate normal cancer tissues in variety organs including breast, cervix, skin, bladder. This paper investigates the possibility differentiating malignant prostate tissue using bioimpedance spectra. A probe was designed measure spectra over range 10 kHz 1 MHz. The fully characterized discrete loads saline solutions different concentrations. Impedance five ex vivo prostates were measured operating room...

A rotational Electrical Impedance Tomography (rEIT) methodology is described and shown to produce spatially accurate absolute reconstructions with improved image contrast an ability distinguish closely spaced inclusions compared traditional EIT on data recorded from cylindrical breast-shaped tanks. Rotations of the tank without altering interior conductivity distribution are used rEIT data. Quantitatively, was able two that were 1.5 cm closer together than could achieve for placed 2 3 center...

Wearable technology enables a range of exciting new applications in health, commerce, and beyond. For many important applications, wearables must have battery life measured weeks or months, not hours days as most current devices. Our vision wearable platforms aims for long but with the flexibility security to support multiple applications. To achieve workload comprising apps from developers, these robust mechanisms app isolation developer tools optimizing resource usage.

The specificity of current screening methods for prostate cancer is limited and it results in approximately 75% to 80% patients who undergo biopsy having findings negative cancer. We used electrical impedance spectroscopy evaluate how significantly the properties benign malignant prostatic tissues differ with goal providing clinicians a new biomarker aid diagnosis.We collected freshly excised prostates from 14 men immediately following radical prostatectomy. were sectioned into 3 mm slices....

Electrical impedance tomography (EIT) is used to image the electrical property distribution of a tissue under test. An EIT system comprises complex hardware and software modules, which are typically designed for specific application. Upgrading these modules time-consuming process, requires rigorous testing ensure proper functioning new with existing ones. To this end, we developed modular reconfigurable data acquisition (DAQ) using National Instruments' (NI) offer inherent compatibility over...

Timely detection of an individual’s stress level has the potential to improve management, thereby reducing risk adverse health consequences that may arise due mismanagement stress. Recent advances in wearable sensing have resulted multiple approaches detect and monitor with varying levels accuracy. The most accurate methods, however, rely on clinical-grade sensors measure physiological signals; they are often bulky, custom made, expensive, hence limiting their adoption by researchers general...

Electrical properties of the prostate may provide sufficient contrast for distinguishing malignant and benign formations in gland. We evaluated how well these electrical discriminate cancer from noncancer tissues prostate.Electrical admittivity (conductivity permittivity) was recorded at 31 discrete frequencies 0.1 to 100 kHz each 50 ex vivo human prostates. A specifically designed probe used gauge sectioned specimens. The specific tissue area probed marked precise colocalization between...

Transrectal electrical impedance tomography (TREIT) has been proposed as an adjunct modality for enhancing standard clinical ultrasound (US) imaging of the prostate. The TREIT probe array electrodes adhered to surface a cylindrical US that is introduced inside volume. Reconstructing images in open-domain geometry established with this technique poses additional challenges those encountered closed-domain geometries, present more conventional EIT systems, because rapidly decaying current...

The chaotic vascular network surrounding malignant tumors leads to pulsatile blood flow patterns that differ from those in benign regions of the breast. This study aimed determine if high-speed electrical impedance tomography (EIT) is able detect conductivity changes associated with cyclic blood-volume and gauge potential using these signatures differentiate within EIT imaging pulsating latex membranes submerged saline baths provided initial validation its use for tracking temporally varying...

This paper establishes for the first time that a coupled ultrasound (US) and electrical impedance tomography (EIT) system can serve as non-invasive, spatially localized approach to extract clinically relevant muscle properties. The US/EIT represents potential enhancement myography (EIM), which has shown promise non-invasive technology may have important clinical use in indicating neuromuscular disease status diagnostic tool. A 2.5D EIT algorithm evaluated on simulation, measured phantoms,...

Electrical impedance tomography is an imaging modality being investigated for use in detection of breast cancer. Use higher frequencies than have typically been employed may benefit the processes. In this current work we discuss design and initial implementation a system having bandwidth 10 MHz. Previous investigations into high frequency designs proven more difficult anticipated shown that careful selection systems architecture critical to achieving broadband performance above 1 The new...

Electrical impedance tomography (EIT) is a method that can render continuous graphical cross-sectional images of the brain's electrical properties. Because these properties be altered by variations in water content, shifts sodium concentration, bleeding, and mass deformation, EIT has promise as sensitive instrument for head injury monitoring to improve early recognition deterioration observe benefits therapeutic intervention. This study presents swine model used determine detection...

Magnetic Resonance-Electrical Properties Tomography (MR-EPT) is an imaging modality that maps the spatial distribution of electrical conductivity and permittivity using standard MRI systems. The presence a body within scanner alters RF field, by mapping these alterations it possible to recover properties. field time-harmonic, can be described Helmholtz equation. Approximations this equation have been previously used estimate in terms first or second derivatives data. Using same...

In this paper, an end-to-end CMOS application specific integrated circuit (ASIC) for readout channel in a cardiac electrical impedance tomography system is presented. The ASIC consists of current driver injection, instrumentation amplifier, variable gain amplifier at the analog front end voltage from electrodes, and on-chip 10-bit successive approximation register to digital converter with serial peripheral interface. fabricated 0.18 μm process supply 3.3 V. Amplitude phase extraction...

We employed electrical impedance spectroscopy (EIS) to evaluate the properties of prostatic tissues. collected freshly excised prostates from 23 men immediately following radical prostatectomy. The were sectioned into 3 mm slices and property measurements complex resistivity recorded each using an probe over frequency range 100 Hz kHz. area probed was marked so that tissue fixation slide preparation, histological assessment could be correlated directly with EIS spectra. Prostate cancer...

Diagnostic confirmation of cancer in solid organs is based on biopsy findings. In a standard 12-core prostate protocol, conventional needles sample only 0.95% (∼0.228 cm³) typical 24-cm³ gland. The primary objective this study was to enhance the sensitivity protocol by gauging electrical properties tissue simultaneously with extraction for histopathology analysis. A (Bx) needle instrumented an impedance spectroscopy (EIS) sensor interrogate volume surrounding tip. EIS-Bx device evaluated...

Researchers strive to understand eating behavior as a means develop diets and interventions that can help people achieve maintain healthy weight, recover from disorders, or manage their diet nutrition for personal wellness. A major challenge eating-behavior research is when, where, what, how eat. In this paper, we evaluate sensors algorithms designed detect activities, more specifically, when We compare two popular methods recognition (based on acoustic electromyography (EMG) sensors)...

Currently no efficient and reliable technique exists to routinely assess surgical margins during a radical prostatectomy. Electrical impedance spectroscopy (EIS) has been reported as potential provide surgeons with real-time intraoperative margin assessment. In addition providing quantified measure of status, co-registered electrical tomography (EIT) image presented on surgeon's workstation could add value the assessment process.To investigate this, we conducted comparative study between EIS...

Timely detection of an individual's stress level has the potential to expedite and improve management, thereby reducing risk adverse health consequences that may arise due unawareness or mismanagement stress. Recent advances in wearable sensing have resulted multiple approaches detect monitor with varying levels accuracy. The most accurate methods, however, rely on clinical grade sensors strapped user. These measure physiological signals a person are often bulky, custom-made, expensive,...

Sarcopenia, defined as the age-associated loss of muscle mass and strength, can be effectively mitigated through resistance-based physical activity. With compliance at approximately 40% for home-based exercise prescriptions, implementing a remote sensing system would help patients clinicians to better understand treatment progress increase compliance. The inclusion end users in development mobile apps remote-sensing systems ensure that they are both user friendly facilitate advancements...