The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The red blood cell or erythrocyte is easily purified, readily available, and has a relatively simple structure. Therefore, it has become a very well studied cell in terms of protein composition and function. RBC proteomic studies performed over the last five years, by several laboratories, have identified 751 proteins within the human erythrocyte. Data describing most of their interactions are also...
The use of radio for communication with medical devices provides important convenience and safety features. However, devices that respond to unauthorized queries may inadvertently disclose their presence. It is reasonable for users to expect that their devices' detectability by third parties to be limited, and thus even eavesdroppers to an authorized conversation (e.g. a command sent to an insulin...
The objective of this project is to develop and characterize a targeted drug delivery vehicle capable of the controlled release of chemotherapy to treat malignant tumors. Our construct consists of a magnetic core with a thermosensitive polymer (N-isopropylacrylamide, NIPA) shell. The advantage of this system is that a magnetic field can be used for targeting the construct as well as to induce heat...
Although many protocols exist for peripheral nerve regeneration flj, there has yet to be a single, uniformly applied method that insures a result comparable to autologous nerve grafting - the current gold standard in peripheral nerve repair. For these experiments, MicroFab used its ink-jet dispensing technology to print biocompatible polymers to form nerve regeneration conduits. These proof of concept...
Pervasive health monitoring utilizing wearable wireless sensor nodes can greatly enhance the quality of care individuals receive. Such systems, while in terms of signal processing mostly depend on pattern recognition schemes, must operate independently of human interaction for extended periods. The lack of a general-purpose computationally inexpensive algorithm capable of segmenting sensor readings...
There is currently a need in cochlear implants to develop speech coding algorithms that provide better access to pitch cues, known to be critical for music perception. Such algorithms require an estimate of the fundamental frequency (FO). This paper presents the implementation of a real-time pitch (FO) detector on a personal digital assistant (PDA). The pitch detection algorithm is based on the autocorrelation...
Electrical stimulation is the standard technique for peripheral nerve stimulation, spinal cord stimulation and deep brain stimulation as a treatment for chronic pain. However, recent research has shown the feasibility of stimulating a nerve with pulsed infrared laser beams. This alternative excitation method could become a practical form of neural stimulation but currently it is not without limitations...
The interactions between prostate cancer cells with endothelial cells in the microvessels play an important role in prostate tumor metastasis. However, not many studies have been conducted to investigate the adhesion of prostate cancer cells on vascular endothelium and related mechanisms and modulators. In this study, human microvascular endothelial cells (HMEC) grown on glass slides were exposed...
There exists a need for more accurate functional localization through the registration of functional to anatomical magnetic resonance brain images. This paper introduces a new software tool, named NPTK, that has been developed at the Signal and Image Processing Laboratory of the University of Texas at Dallas for improved functional localization in single- subject analysis. This software toolkit is...
Cell survival and infiltration into tissue engineering scaffolds affects both the rate at which cells proliferate on the scaffold and the ultimate functionality of the scaffold. In order to assess cell distribution and growth in degradable scaffolds, we have developed a combination of methods that results in a 3D image that can be used to assess cell viability and distribution within PLGA scaffolds...
Cognitive, motor and perceptual processes diminish with age and thus limit adaptive capabilities of older individuals. Our hypothesis is that with aging there is decreased expression of these proactive adaptive capabilities. These experiments were designed to test this hypothesis by implementing an integrated approach to quantifying physiological characteristics in older individuals. We are working...
In this paper the surface modeling of complex (ill-posed) bone objects by the self-organizing map (SOM) artificial neural network is introduced for the purpose of future 3-D surgical planning and 3-D/2-D registration in intra-operative fluoroscopic image guidance and monitoring of orthopedic surgery. Self-organizing map, an unsupervised neural network is initialized with the three-dimensional globe...
The past twenty years have witnessed the implementation of various mechanical and information/communication technologies (ICT). Together, they are minimizing traumatic vehicular morbidity and mortality and upgrading substantially the efficacy of out-of-hospital emergency care. To date, these technologies are often deployed independently, rather than in an integrated "system". If they were...
Tremor is a rhythmic, involuntary, oscillatory movement of a body part (e.g., head, hand, etc.) The first objective tremor measurement was performed in 1889 and historically, measurement has been primarily one dimensional. Recent advances in inertial sensing technology have spawned interest in capturing motion information from multiple degrees of freedom (DOF). Our current interest is in the formation...
Near Field Communications (NFC) is a 13.56 MHz inductively coupled power delivery and communication protocol that extends the ISO 14443 RFID standard. Low cost NFC scanner subsystems are anticipated to be widely incorporated in coming generations of commodity cellular phones. We consider the potential of this emerging infrastructure to provide convenient and low cost power distribution and communication...
Extensions and enhancements are proposed for a previously developed system to remotely monitor patient vital signs. This previously developed network utilizes Crossbow MICAz motes to create a wireless network to gather data, which is sent to a central monitoring station. It includes a graphical user interface to store and display incoming measurements for all patients being monitored. Here the range...
Pervasive human monitoring of various biological parameters is a growing field of interest. The focus of this research is to provide a step forward towards pervasive health monitoring. We describe a system to remotely monitor data from a patient's electrocardiogram (ECG). The data is transferred to a central monitoring station via a wireless sensor network for display. Crossbow MICAz motes are used...
We describe in details the materials and methods used to construct, calibrate and evaluate tissue phantoms and light sources; we describe the method for acquiring the data and present quantitative results for light intensity reconstruction using the reproducible phantom's optical properties as a priori information. We consider a tissue phantom imaging with optical properties which match those for...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.