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In our country, in many different brands and types of ultrasound devices are used very intensely in the health sector. However, these ultrasound devices do not pass a mandatory/legal or voluntarily technical measurements /controls. In order to verify the indicated performance and safety of the ultrasonic probes that is the most important part of ultrasound devices, measurements/controls are required...
The aim of this study is to determine the estimation of hemoglobin concentration and oxygen saturation of tissue by non-invasively functional laser imaging for early skin cancer diagnosis. The early diagnosis of melanoma is a key factor that remarkably reduces the mortality rate. Diffuse reflectance spectroscopy is a very useful device for diagnosis and treatment purposes under in-vivo conditions...
In this study, programmable current source (PCS) experimental set-up that measures the nerve conduction velocity is designed. Firstly, analog PCS is implemented with integrated circuit of 555. Then, microprocessor-based PCS is designed by improving existing analog design at hand. PCS can produce current signal with adjustable frequency and amplitude. An EMG amplifier circuit is designed to measure...
In this study, we present comparison of human and software reading of contrast-detail mammography (CDMAM) phantom images for a digital mammography system. The human readings were conducted through CDMAM images using 3 Megapixel and 5 Megapixel medical monitors. The phantom was positioned between Poly methyl methacrylate (PMMA) blocks of 20mm thickness. A set of 8 digital radiographs were taken using...
Clinical engineering comprise of management of medical technology, medical device maintenance, repair, and calibration which they are bought according to capacity of health institution. In this study, entirely using principles have been given about medical device maintenance, repair, and calibration. A model has been designed which is biomedical calibration production service to new vast city hospitals...
In order to understand the cognitive processes, motor actions and the behavioral deficits and neurological disorders rising due to malfunctioning of the related neuronal structures, models at different levels are proposed in computational neuroscience. Models developed considering the nonlinear and distributed working principles of neural structures help to reconstruct the processes but are far away...
Schizophrenia is a mental illness which usually begins in adolescence and can display important disorders of feelings, thoughts, and behavior. Delusion, hallucinations, and disorganized speech and behavior are some of the specific symptoms of schizophrenia. It is indicated that schizophrenia can be confused with other psychiatric disorders such as attention deficit hyperactivity disorder and mood...
In this work, we developed a novel method to diagnose traumatized kidney in the presence of laceration, contusion and active bleeding due to abdominal trauma. Our CAD system performs 94,44% of sensitivity at 0.13 false positives per dataset.
The performance of the left- and right-hands of a person may be different from each other. In general, people use one hand with a superior performance compared to the other hand where that hand is preferred for performing daily activities. It is critical to understand their preference for right or left hand use, especially in cases where the skills should be improved to use both hands precisely in...
In this study, vibrational resonance phenomena is investigated for topologies of scale-free network in excitable neural system. Effect of heterogeneity which emerges from weightening synaptic conductivity in neural network on performance of weak signal detection is studied. FitzHugh-Nagumo neuron model with electrical coupling is used as excitable system. In the result of numerical simulations; it...
In this study, biomedical devices which is used by patient at home such as glucometer, thermometer, blood pressure meter intended to be performed with the functions of a single device. Biological signals such as blood pressure, blood sugar and body temperature can be measured and the measurement results can be recorded with proposed system. Oscillometric method is preferred for blood pressure measurement,...
Design of modern prosthetic hand that have multiple degrees of freedom and able to move multiple fingers and wrist simulataneously, it has been important to use different sensor structures having advantegous in both size and energy usage. In this study, it is investigated whether piezoelectricity-based force sensors can be used instead of EMG sensors in prosthetic hand design or not. As a result of...
Application which is launched Turkish language, designed for celiac disease patients to provide information to users about the foods or drugs products content contain the protein gluten or not. In this way, when celiac patients purchase food or drugs, is provided to be more informed and easier way to do their shopping.
The operating rooms are known as clean rooms because it must have the high quality air without the dust and the particles. In the clean room, the dust that is sourced from both the personnel and the patient and the machines, causes the risk of infection. By using the temiz-hava system, it is seen that the percent of infection risk decreases. But, this clean air system must be controlled by using the...
Chronic wound healing is an important problem especially in diabetic and the elderly which is needed development of the current treatment methods. Electromagnetic fields (EMF) has a significant impact on our body. These fields are being used for bone problems, cartilage regeneration, and pain removal for physiotherapy purposes. Lately, EMFs are often used in in vitro and in vivo assays. In this study,...
In the scope of bone tissue engineering, there has still been great amount of demand on designing biomimetic scaffolds that induces differentiation of osteoprogenitor cells by cell-matrix interaction at the nanoscale as well as mimicking micro assembly of compact bone while providing high mechanical strength. In this study, in order to use in the treatment of large bone defects, osteon mimetic 3D...
Monitoring the patients is highly important for a successful treatment. In some cases, a patient needs to see the doctor more than once and this may cause extra time and financial load for the patients. These patients, especially accommodating far from hospital, frequently do not cooperate on monitoring. Patient monitoring is important for the course of a disease. Remote disease (treatment) monitoring...
In this paper; the effects of autapse (a kind of synapse formed between the axon of the soma of a neuron and its own dendrites) and ion channel blocking on the firing regularity of a biological small-world neuronal network, consists of stochastic Hodgkin-Huxley neurons, are studied. In this study, it is assumed that all of the neurons on the network have a chemical autapse and constant membrane area...
Melanoma arises from cancerous growth in pigmented skin lesion and t is the most deadliest form of skin cancer. Melanoma forms 4% from all skin cancer cases and it accounts for 75% of all skin cancer deaths. Even when the expert dermatologists uses the dermoscopy for diagnosis, the accuracy of melanoma diagnosis is estimated to be about 75–84%. The aim of this work classify skin lesions like normally,...
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