Browsing Department of Bioengineering by Author "Alexandrakis, Georgios"
Now showing items 1-20 of 22
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Application Of Scanning Correlation Spectroscopy Techniques To Quantify DNA Double Strand Break Repair Kinetics In The Living Cell After Exposure To γ-rays And Radiomimetic Chemicals
Abdisalaam, Salim (Biomedical Engineering, 2013-03-20)The kinetics of most proteins involved in DNA damage sensing, signaling and repair following ionizing radiation exposure cannot be quantified by current live cell fluorescence microscopy methods. This is because most of ... -
Attenuation Based Quantification Of Interstitial Lung Disease Using High Resolution Computed Tomography And Correlation With Pulmonary Function Tests
Watharkar, Snehal S. (Biomedical Engineering, 2010-11-01)Interstitial lung disease (ILD) is a chronic and progressive pulmonary disease of the lung parenchyma resulting in fibrotic scar formation of the pulmonary alveoli. The pathologic changes in the lung result in restrictive ... -
Biliary Tract Differentiation Through Use Of Visible To NIR Hyperspectral Reflectance Imaging
Wehner, Eleanor F. (Biomedical Engineering, 2014-09-17)Cholecystectomies are one of the most common surgeries performed in the United States, and most of the complications which arise from these are injuries to the common bile duct (CBD) resulting from a misidentification of ... -
Diffused Correlation Spectroscopy for Measurement of Blood Perfusion During Low Level Laser Therapy (LLLT)
Sagar, Soni (2016-05-27)Near infrared stimulation or Low Level Laser Therapy (LLLT) is an innovative technique shown to effect the microvasculature hemodynamics. The aim of this study is to use Diffused Correlation Spectroscopy (DCS) to evaluate ... -
Functional Near Infrared Spectroscopy For The Assessment Of Motor Cortex Plasticity In Pediatric Subjects Affected By Cerebral Palsy
Khan, Bilal (Biomedical Engineering, 2009-09-16)Functional near infrared spectroscopy (fNIRS) is widely used to monitor hemodynamic changes occurring in the cerebral cortex as a result of neuronal activation. One of the current challenges in this field is that ... -
A GLM/ICA Analysis Using Motion Tracking And Electromyography Differentiates Between Brain Activation Due To Intended And Unintended Motions In fNIRS Images Acquired During A Finger Tapping Task Performed By Children With Cerebral Palsy
Hervey, Nathan (Biomedical Engineering, 2014-07-14)Functional neurological imaging has been shown to be valuable in evaluating brain plasticity in children with cerebral palsy (CP). In recent studies it has been demonstrated that functional near-infrared spectroscopy (fNIRS) ... -
High-resolution imaging in a deep turbid medium based on an ultrasound-switchable fluorescence technique
Nguyen, Kytai Truong; Yuan, Baohong; Liu, Yuan; Alexandrakis, Georgios (American Institute of Physics (AIP)Department of Bioengineering, The University of Texas at Arlington, 2012)**Please note that the full text is embargoed** ABSTRACT: The spatial resolution of fluorescence imaging techniques in deep optically turbid media such as tissues is limited by photon diffusion. To break the diffusion ... -
IMPACT OF MUSCULAR FATIGUE AND ITS MODULATION USING TRANSCRANIAL PHOTOBIOMODULATION (tPBM) ON THE HUMAN BRAIN MEASURED BY FUNCTIONAL NEAR-INFRARED SPECTROSCOPY (fNIRS)
Urquhart, Elizabeth Lyde; 0000-0001-5714-6295 (2020-07-22)When performing exercise, the brain must register and simultaneously integrate input from feedforward (i.e., central command) and feedback (e.g., exercise pressor reflex) neural mechanisms to make appropriate cardiovascular ... -
INTUITIVE HUMAN ROBOT INTERFACES FOR UPPER LIMB PROSTHETICS
Yetkin, Oguz; 0000-0001-8602-2339 (2016-08-19)Modern robotic prosthetic devices for upper limb amputees promise to alleviate an important disability, but are underutilized due to the inability to properly control them. Specifically, the devices afford more degrees of ... -
INVESTIGATING CAUSAL INTERACTIONS IN THE HUMAN BRAIN USING EEG AND fNIRS
Alipourfard, Borzou (2016-08-24)It is necessary for distributed neural assemblies to work in collaboration to achieve the most elementary brain functions. Activities within segregated neural assemblies are integrated to process an incredibly diverse ... -
Investigation Of Brain Activity In Prefrontal Cortex Under Noxious Pain Stimuli And During Psychological Test Using Functional Near Infrared Spectroscopy
Khadka, Sabin (Biomedical Engineering, 2011-07-14)Functional Near Infrared Spectroscopy (fNIRS) is a non-invasive functional neuroimaging technique, which measures changes in oxy-hemoglobin (HbO) and deoxy-hemoglobin (HbR) concentrations based on the principle of near ... -
INVESTIGATION OF FUNCTIONAL CONNECTIVITY AND NEUROVASCULAR COUPLING IN DIFFERENT VIGILANCE / BREATH-HOLD STATES OF THE BRAIN FROM SIMULTANEOUS EEG-fNIRS MEASUREMENTS
Babawale, Olajide (2019-07-10)Functional connectivity and neurovascular coupling are important phenomena that occur in the brain. Functional connectivity is the study of functional brain networks and their characteristics. While neurovascular coupling ... -
Kinetics Analyses Of Interactions Between Oncogenic And Tumor Suppressor Proteins By Quantitative High Resolution Microscopy Methods
Tseng, Shu-Fen (Biomedical Engineering, 2013-07-22)DAB2IP is correlated to the risk of aggressive prostate cancer and loss of DAB2IP not only leads to epithelial-to-mesenchymal transition (EMT), but also makes cells radioresistant. These observations support the notion ... -
Localization Of Biliary Tree Structures By Use Of Photon Diffusion Models
Nadkar, Dharmendra (Biomedical Engineering, 2008-08-08)A novel computational methodology is proposed for the intraoperative localization of biliary tree structures by means of spectrally resolved near-infrared reflectance measurements. As these structures are embedded in fatty ... -
Methodological Advances And Application Of Functional Near-infrared Spectroscopy To Guide Cortical Stimulation For Physical Recovery In Patients With Brain Injury
Khan, BilalNon-invasive cortical stimulation used in conjunction with physical therapy can enhance the motor performance of persons with brain injury. Transcranial direct current stimulation (tDCS) is a non-invasive cortical stimulation ... -
Multi-modality Magnetic Resonance Imaging in Typical and Atypical Developmental Human Brain
Ouyang, Minhui (2016-12-20)Human brain development is structurally and functionally a nonlinear process and even with the tremendous advancements in the field of neuroimaging based on Magnetic Resonance Imaging (MRI) several significant questions ... -
Optimization Of Reconstruction Parameters In Brain Activation Studies
Kanneganti, Aswini (Biomedical Engineering, 2009-09-16)Diffuse Optical Imaging (DOI) is being extensively used in brain activation studies for the quantification of hemodynamic changes in the cerebral cortex. Many investigators have utilized the commercially available CW5 DOI ... -
Post-operative Renal Function Analysis Using Visible DlP® Hyperspectral Imaging System
Thapa, Abhas (Biomedical Engineering, 2011-03-03)Surgical and clinical settings in medical hospitals strive to keep up with technological innovations in order to improve the current healthcare scenario. Hyperspectral imaging (HSI) is a novel technology that addresses ... -
REVEALING HEMODYNAMIC RESPONSE AND DYNAMIC CHANGES IN FUNCTIONAL CORTICAL NETWORKS USING FUNCTIONAL NEAR-INFRARED SPECTROSCOPY (fNIRS)
Cao, Jianwei (2017-12-15)Therapeutic interventions, such as physical therapy and non-invasive brain electrical stimulation can enhance the physical performance of persons with brain disorders. One often-used form of physical therapy named ... -
Simulation Feasibility Studies Of A High Density fNIRS Imaging System
Natekar, Pallavi (Biomedical Engineering, 2014-09-17)Functional near infrared spectroscopy (fNIRS) is a technique that enables monitoring brain function, by detecting changes in near-infrared light absorbance resulting from changes in brain hemodynamics during periods of ...