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Browsing Biyomedikal Mühendisliği Enstitüsü by Issue Date

Browsing Biyomedikal Mühendisliği Enstitüsü by Issue Date

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  • Evaluation of renal function using first pass contrast enhanced MRI 
    Saldoğan, Okan. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2005., 2005.)
    Magnetic Resonance Imaging (MRI) of the kidney has a great potential because the functional parameters, which can be investigated obtained noninvasively are multiple: glomerular filtration, tubular concentration and transit, ...
  • Formation of Turkish norms in gait analysis 
    Yılmaztürk, Şule. (Thesis (M.S)-Bogazici University.Institute of Biomedical Engineering, 2005., 2005.)
    In this study, a normative database of basic gait parameters, kinematics and kinetic patterns for 181 normal subjects with the ages of four, five, seven, eight, nine, sixteen, seventeen, eighteen and twenty is reported. ...
  • Measurement of vibrotactile thresholds of the non-pacinian channel 
    Kalkancı, Özge. (Thesis (M.S)-Bogazici University.Institute of Biomedical Engineering, 2005., 2005.)
    The aim of this study is to measure the thresholds of the Non-Pacinian I (NP I)channel which is believed to be mediated by rapidly-adapting (RA) fibers. Thresholds of the NP I channel were measured using a two-interval ...
  • Spatial analysis of event related brain potentials (ERP) by wavelet transform 
    Bayram, Ali. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2005., 2005.)
    Localization of the cognitive activity in the brain is one of the major problems inneuroscience. Current techniques for neuro-imaging are based on fMRI, PET, and ERPrecordings. The highest temporal resolution, which is ...
  • Design of a pressure and flow measuring equipment for medical use 
    Kaçur, Gülşah. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2005., 2005.)
    Accuracy and reliability of measurements play a very important role in health-careregardless of the field which may be therapy, diagnosis or life support. Medical equipment,on the other hand, is subject to failure due to ...
  • Non-invasive monitoring of gastric motility in humans 
    Özcan, Koray. (Thesis (M.S)-Bogazici University.Institute of Biomedical Engineering, 2005., 2005.)
    Stomach is an organ of gastrointestinal system where the food coming from the mouth through the esophagus is mixed by the rhythmic contractions of the smooth muscles, with acid and other gastric secretions. The control of ...
  • Effects of various parameters on binocular rivalry 
    Bölükbaşı, Gamze. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2006., 2006.)
    In daily life, the two eyes see similar images and there is no perceptual competition. The input from the eyes are compatible and the images are fused. On the other hand, binocular rivalry occurs when two eyes are presented ...
  • Minimization of inhomogeneities in magnetic resonance mammography 
    Doğruluk, Orkun Serdar. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2006., 2006.)
    Magnetic Resonance Mammography (MRM), accepted by for use as asupplemental tool to mammography in 1991, provides detailed information about very small lesions that X-ray mammography and ultrasound often cannot detect. Women ...
  • SMT: Split/merge fiber tractography for MR-DTI 
    Bozkaya, Uğur. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2006., 2006.)
    Magnetic Resonance Diffusion Tensor Imaging is a recent imaging modalitywhich has shown promise as a non-invasive tool for estimating the orientation andquantity of white matter tracts in vivo. It has been shown that the ...
  • Wavelet transform based electrocardiogram compression and comparison with DCT/DST methods 
    Namdar, Mustafa. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2006., 2006.)
    In this thesis we investigate wavelet transform based ECG compressiontechniques and compare them with conventional approaches. A major issue addressed ishow to guarantee a user-specified error limit measured by the percent ...
  • The effects of MS/VDB lesions on behavioral despair and learning and memory 
    Aksel, Ayla Aksoy. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2006., 2006.)
    The present study aimed to investigate the consequences of hippocampal denervation in terms of irreversible medial septal area lesioning on behavioral despair and navigational learning. To that purpose medial septum / ...
  • Supra-threshold contrast perception in glaucomatous and normal human subjects 
    Utine, Canan Aslı. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2006., 2006.)
    The lateral inhibition mechanism of the sensorineural retina provides our visual systemwith a mean to sharpen the boundary between different luminances. Contrast is defined as the ratioof the difference in the luminance ...
  • Effects of repetitive retinotopic stimulus on visual cortex fMRI signal 
    Hamamcı, Andaç. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2006., 2006.)
    The aim of this study is to investigate the effects of the repetitive stimuluson the retinotopic functional magnetic resonance imaging results obtained. Screenprojectorsystem is constructed to show visual stimulus to ...
  • Effect of incident light intensity and source-detector separation on photon migration depth in turbid media 
    Şahin, Betül. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2006., 2006.)
    Diffuse optical tomography (DOT) and near-infrared spectroscopy (NIRS) aretechniques that suffer from an uncertainty of photon migration pathlength which isimportant for information of the tissue depth that is probed. We ...
  • Optimal collimator design using Monte Carlo Simulation and RSM for breast scintigraphy 
    Bilgin, Barış. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2006., 2006.)
    Scintimammography can be a useful adjunct to physical examination andmammography for the detection and characterization of breast tumors, especially forpatients with dense breast tissue, architectural distortion of the ...
  • Modeling of physiolsgical properties of stored human blood by complex impedance measurements 
    Sezdi, Manâ. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate of Biomedical Engineering, 2006., 2006.)
    In this study, the relationship between physiological properties of human blood,namely Na+, K+, Cl- concentrations, pH, 2,3-DPG and ATP, and its electrical parameters,the Cole-Cole parameters- the resistance of the ...
  • Quantification of the effect of warm up and stretching on the oxygen metabolism using an improved version of a fNIRS device 
    Alkaş, Emir. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2006., 2006.)
    In the vastly improved field of exercise physiology, it is an imperative to exercise a a warm up and stretching routine before training. The reasoning is closely associated with the oxygen (O2) metabolism in the blood. ...
  • Active and passive processing of sequential tactile inputs 
    Murat, Ali. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2006., 2006.)
    In this thesis, a psychophysics experiment, which is designed to test the effect of active and passive touch on tactile temporal processing, is presented. Active and passive touch are terms that were defined first by J.J. ...
  • Generec implementation of the cortico-hippocampal model of gluck and myers im hippocampal region atrophy 
    Çağıran, İlim. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2006., 2006.)
    Hippocampal region dysfunction is suggested to have an important effect for thecognitive impairments observed in Alzheimer̕s disease. In some patients, hippocampus andnearby structures show atrophy while other brain ...
  • Design optimization of a continuous detector for PEM imaging with high resolution and DOI capability 
    Berk, Serkan. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2006., 2006.)
    The objective of this thesis is to improve the resolution of a continuous detector by using an algorithm other than Anger algorithm. Our aim is to obtain a reasonable resolution necessary for Positron Emission Mammography ...

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