Bogazici University Digital Archive: Recent submissions

  • Measurement of vibrotactile thresholds of normal children 
    Öztek, Çiğdem. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2006., 2006.)
    In this study, the vibrotactile thresholds of children (ages between 8 and 11) weremeasured at several frequencies, and compared to the vibrotactile thresholds of adults(ages between 21 and 27) at 40 Hz and 250 Hz. Also, ...
  • A FES device developed for treating drop foot 
    Yavuz, Aykut. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2006., 2006.)
    Multiple sclerosis, stroke and peripheral neural disorders affect the centralnervous system and cause various nervous and muscular disabilities. One of thesedisabilities is called drop foot, which prevents the patient from ...
  • Inventory control in clinical engineering 
    Göbelek, H. Derya. (Thesis (M.S.) - Bogazici University. Institute of Biomedical Engineering, 1985., 1985.)
    The purpose of the Equipment Control Program in Biomedical Engineering is to optimize the safety, effectiveness, efficiency and economy of diagnostic, therapeutic and support equipment used for patient care. In this study, ...
  • Sub-components of event related potentials (ERP) associated with polymorphisms in glutamate, gaba and dopamine neurotransmitter receptors 
    Beyazyürek, Çağrı. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2006., 2006.)
    Event related potentials (ERPs) reflect perceptual and cognitive processes andtherefore provide an electrophysiological window onto brain function during cognition.P300 component as well as spectral components of ERPs are ...
  • Measuring changes in cerebral oxygenation and hemodynamics during obstructive sleep apnea by functional near infrared spectroscopy 
    Alptekin, Zeynep. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2006., 2006.)
    One of the most important integral part of human existence is sleep. It has beenthought that sleep has a recovery function for brain. This importance opens a new area ofresearch about sleep disorders. Obstructive sleep ...
  • 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 ...
  • 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 ...
  • 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 ...
  • Biomechanical analysis of sit-to-stand motion in children with backpack load 
    Seven, Yasin Barış. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2006., 2006.)
    Sit-to-stand (STS) motion is a highly coordinated and energy demanding task ofdaily activities. The primary objective of this study was to investigate the effects of backload on the sagittal plane kinematics and kinetics ...
  • 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 ...
  • Cross calibration of DEXA by using European spine phantom 
    Bayraktar, Serkan Uğur. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2005., 2005.)
    Osteoporosis is a disease characterized by low bone mass and micro-architecturaldegradation of bone tissue, leading to enhanced bone fragility and a consequent increase infracture risk. Among many risk factors for osteoporosis, ...
  • Microcontroller based high power 809-nm diode laser design for biophotonics applications 
    Geldi, Cem. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2005., 2005.)
    High power diode lasers irradiating near infrared light (800-980-nm) have a widerange of applications in many branches of medicine due to the developments in the lasertechnology for the last 20 years. The ability of having ...
  • Optical properties of native and coagulated lamb brain tissues in vitro in the visible and near-infrared spectral range 
    Özer, Korhan. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2005., 2005.)
    The aim of this study was to estimate optical properties ofnative and coagulated lamb brain tissues at three different temperatures (45⁰C, 60⁰C, 80⁰C) by means of measured data which formed due to light-tissue interactions ...
  • Standards for biomedical devices in foreign countries and Turkey 
    Eryolalan, Korhan. (Thesis (M.S.) - Bogazici University. Institute of Biomedical Engineering, 1985., 1985.)
    In this study, the standards and standardizing organizations of biomedical devices which are very important in healthcare are investigated. The regulations of biomedical devices in U.S.A, Canada and Europe countries are ...
  • Cerebrovascular dynamics in migraine measured with fNIRS 
    Bilensoy, Didem. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2005., 2005.)
    Migraine is a neurovascular pain syndrome affecting nearly 12 per cent of world's population. Migraine decreases the life quality and work efficiency of patients drastically, and causes billions of dollars of economical ...
  • Cancer diagnosis via elastic scattering spectroscopy 
    Ateş, Filiz. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2005., 2005.)
    The goals of this study were to test the reliability of CancerScanner system whetherit can detect the optical alteration of tissue dependent on temperature and to test the systemon human tissues in which system can detect ...
  • Tissue welding with 980-nm diode laser system 
    Korkut, Zeynep Dereli. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2005., 2005.)
    In this study, tissue welding with 980 nm laser system which is first-time in the literature, was performed. Effects of 980-nm diode laser on tissue welding are not studied before. Hence, a preliminary study was done to ...
  • Intraoperative coronary blood flow and myocardial perfusion imaging method by means of thermal image processing 
    Susam, Mehmet. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2005., 2005.)
    One of the most popular surgical operations is coronary artery by-pass grafting (CABG) operation, since coronary arterial disease is one of the leading causes of death and the main surgical treatment modality for this ...
  • Computer assisted bone age assessment 
    Haktan, Mahmut. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2005., 2005.)
    Bone age assessment based on the radiological examination of the left hand and wrist is a procedure frequently performed to evaluate the growth of pediatric patients. In this thesis we examined studies conducted on the ...
  • Design of a respiratory monitor for the teaching laboratory 
    Ertan, Can Kemal. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2005., 2005.)
    The goal of this thesis was to develop a cost-effective, portable and user-friendlyrespiratory monitor that gives the opportunity to observe pressure, flow and volumewaveforms as well as time based ventilation data. An ...

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