Mertcan Özdemir | TOBB University of Economics and Technology (original) (raw)

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Papers by Mertcan Özdemir

Research paper thumbnail of Ultrasonografi eğitimi için balistik jelatin esaslı fantom geliştirilmesi ve özelliklerinin araştırılması

The simulation has become an important tool for healthcare practitioners who have difficulty in a... more The simulation has become an important tool for healthcare practitioners who have difficulty in accessing patients to learn ultrasound imaging modes. The ultrasound phantoms are specially designed objects that are used or imagined to evaluate, analyze and adjust the performance of test devices. These phantoms for ultrasonography devices are expensive, and low-cost alternatives have provided an educational experience that does not give the best result. Ballistic gelatin is a member of the 250A-Bloom hydrogel family that resembles human muscle tissue in terms of its mechanical properties. The 250A-Bloom Ballistic Gelatin is prepared with different mixing ratios to be made the mechanical tests such as gunshot, compression and electrical conductivity measurement. The mechanical results are compared with in order to measure the similarity of our model we prepared to human muscle tissue. It is showed that the model phantom model has very close mechanical properties to human muscle tissue at time-dependent characteristics of mechanical test results. It is also measured how long it can last without degradation with the time required to use it in the simulation. Based on these results, our phantom model is recommended as a model for the creation of phantom limb model. Consequently, this model is a much more affordable alternative and easy to produce, it facilitates to work with any organ model in ultrasound imaging for healthcare practitioners.

Research paper thumbnail of Development of Radiant Warmer Thermal Monitoring System to Improve Neonatal Patient Safety

Journal of Intelligent Systems with Applications

Temperature measurement is a vital part of daily newborn care. In temperature measurement, accura... more Temperature measurement is a vital part of daily newborn care. In temperature measurement, accurate measurements must be taken to detect deviations from expected values for the incubator and radiant heater function. Monitoring the temperature is keeping the baby in a thermoneutral environmental zone. The study tested body surface temperature under various clinical conditions using an affordable infrared thermography imaging technique. Temperature distributions are displayed as real-time videos and analyzed to evaluate average skin temperatures. This study demonstrates the design and implementation of a virtual temperature sensing application that can help neonatologists provide additional security to a newborn's skin temperature. The influence of different environmental conditions inside the radiant heater with respect to the surface temperature has been verified.

Research paper thumbnail of Development of Invasive Blood Pressure Simulator Design for Testing and Calibrating

2020 Medical Technologies Congress (TIPTEKNO), 2020

Patient monitor modules have various inputs for many vital function measurements. Blood pressure ... more Patient monitor modules have various inputs for many vital function measurements. Blood pressure measurement, one of the most important of these measurements, is included in the biomedical engineering field. This study is about the design and implementation of a programmable invasive blood pressure simulator. This device can generate the programmable behavior of the voltage signal corresponding to the blood pressure curve. The user communication interface of the device allows to select the type of signal produced with the LCD and 3 buttons. Broad spectrum of the generated signals corresponding to physiological or pathological blood pressure curves are stored in a programmable memory. The input and output connectors of the device can be directly connected to a patient monitor or IBP Kit to IBP module input. Invasive blood pressure measurement simulation can be used in IBP Kits and monitors developed for training and calibration purposes.

Research paper thumbnail of Investigating Ballistic Gelatin Based Phantom Properties for Ultrasound Training

The simulation has become an important tool for healthcare practitioners who have difficulty in a... more The simulation has become an important tool for healthcare practitioners who have difficulty in accessing patients to learn ultrasound imaging modes. The ultrasound phantoms are specially designed objects that are used or imagined to evaluate, analyze and adjust the performance of test devices. These phantoms for ultrasonography devices are expensive, and low-cost alternatives have provided an educational experience that does not give the best result. Ballistic gelatin is a member of the 250-Bloom hydrogel family that resembles human muscle tissue in terms of its mechanical properties. The 250-Bloom Ballistic Gelatin (BG) is prepared with different mixing ratios to be made the mechanical tests such as gunshot, compression and electrical conductivity measurement. The results are compared with the mechanical results of human muscle tissue in order to measure the similarity of the 250-Bloom BG we prepared to human muscle tissue. It is showed that the 250-Bloom BG phantom model has very...

Research paper thumbnail of Wireless Transmission of Heart Rate and Blood Pressure Measurements for Remote Patient Monitoring

2019 Medical Technologies Congress (TIPTEKNO), 2019

This paper describes the development of a wireless pulse and blood pressure monitoring system bas... more This paper describes the development of a wireless pulse and blood pressure monitoring system based on a microprocessor with low cost. It is aimed to receive blood pressure information (tension) through certain processes such as amplifying and filtering of the signal which is obtained by using BIOPAC SS19LA Blood Pressure Cuff and Transducer. With the designed prototype, it is possible to determine both systolic and diastolic pressure. Following preprocessing of the signal, the information of blood pressure and heart rate data of the patient is wirelessly transmitted to smartphone by using Bluetooth Module. The wireless system is used to transmit the measured data to a remote location. In this way, the biomedical parameters obtained from the patient can be instantly transmitted to any pre-paired smart phone and also recorded in the corresponding device.

Research paper thumbnail of Investigation of ballistic gelatin based phantom models for computed tomography, x-ray and ultrasound imaging devices

Simulation-based medical education provides a learner-centered environment in which novice, inter... more Simulation-based medical education provides a learner-centered environment in which novice, intermediate and advanced practitioners can learn or practice their skills without harming patients. Medical device phantoms are specially designed objects that are used in simulation based trainings as well as technical features such as evaluating, analyzing and adjusting the performance of devices. Ballistic gelatin is a member of the 250A-Bloom hydrogel family, which mimics human muscle tissue in terms of mechanical properties. In this study, ballistic gelatinbased phantoms were produced and examined on medical device images. According to the results, it is suggested to use phantom models as a medical device phantom in device training. The main advantages of these models are that their production is practical and economical.

Research paper thumbnail of Investigating EEG Based Marker for Diagnosis of Mathematical Difficulties

2020 28th Signal Processing and Communications Applications Conference (SIU), 2020

Mathematical difficulty in mathematics, also known as Dyscalculia, is a learning disability that ... more Mathematical difficulty in mathematics, also known as Dyscalculia, is a learning disability that makes it difficult to comprehend numbers and symbols and to perform mathematical calculations. Generally, it's known as the mathematical version of dyslexia. In this study, Hjorth parameters were used to analyze the change of EEG signals during mental arithmetic task for multifractal analysis of EEG signals. Other features such as relative power and statistical properties were also analyzed. This study may provide an alternative diagnostic method for some psychological disorders such as arithmetic learning and difficulties in understanding, and mathematical difficulties. The aim of the study is to provide a simple test and feature extraction for the diagnosis of mental illnesses and mathematics difficulties at an early age. For this purpose, the data are taken from the same number of participants who do good and bad at math problems. We found that ratio of theta band's amplitudes...

Research paper thumbnail of Lower limb phantom design and production for blood flow and pressure tests

The EuroBiotech Journal

Phantoms are specifically designed objects that are utilized or imaged to evaluate, analyze and t... more Phantoms are specifically designed objects that are utilized or imaged to evaluate, analyze and tune the performance of experimental devices. In this project, it is aimed to design a phantom that responds in a similar manner with how human blood circulation would act in specific flow and pressure tests such as pulse measurement. Ballistic gelatin is a member of hydrogel family with 250 Bloom value which resembles human muscle tissue in terms of mechanical features. That’s why we carried out a uniaxial compression test on our gelatin sample to analyze its similarity of human muscle tissue in terms of elastic modulus, stiffness and rupture strength. Test results indicated that our gelatin sample has approximate values with organic human muscle tissue. Designed model was X-rayed and the similarities of the model to human texture were compared. After producing of lower limb phantoms, we carried out a circulation test through them by the aid of a peristaltic pump to simulate the actual b...

Research paper thumbnail of Lower limb phantom design and production for blood flow and pressure tests

The EuroBiotech Journal, Oct 27, 2017

Phantoms are specifically designed objects that are utilized or imaged to evaluate, analyze and t... more Phantoms are specifically designed objects that are utilized or imaged to evaluate, analyze and tune the performance of experimental devices. In this project, it is aimed to design a phantom that responds in a similar manner with how human blood circulation would act in specific flow and pressure tests such as pulse measurement. Ballistic gelatin is a member of hydrogel family with 250 Bloom value which resembles human muscle tissue in terms of mechanical features. That's why we carried out a uniaxial compression test on our gelatin sample to analyze its similarity of human muscle tissue in terms of elastic modulus, stiffness and rupture strength. Test results indicated that our gelatin sample has approximate values with organic human muscle tissue. Designed model was X-rayed and the similarities of the model to human texture were compared. After producing of lower limb phantoms, we carried out a circulation test through them by the aid of a peristaltic pump to simulate the actual blood circulation of human body limbs. This designed phantom is made ready for available flow and pressure tests.

Research paper thumbnail of Ultrasonografi eğitimi için balistik jelatin esaslı fantom geliştirilmesi ve özelliklerinin araştırılması

The simulation has become an important tool for healthcare practitioners who have difficulty in a... more The simulation has become an important tool for healthcare practitioners who have difficulty in accessing patients to learn ultrasound imaging modes. The ultrasound phantoms are specially designed objects that are used or imagined to evaluate, analyze and adjust the performance of test devices. These phantoms for ultrasonography devices are expensive, and low-cost alternatives have provided an educational experience that does not give the best result. Ballistic gelatin is a member of the 250A-Bloom hydrogel family that resembles human muscle tissue in terms of its mechanical properties. The 250A-Bloom Ballistic Gelatin is prepared with different mixing ratios to be made the mechanical tests such as gunshot, compression and electrical conductivity measurement. The mechanical results are compared with in order to measure the similarity of our model we prepared to human muscle tissue. It is showed that the model phantom model has very close mechanical properties to human muscle tissue at time-dependent characteristics of mechanical test results. It is also measured how long it can last without degradation with the time required to use it in the simulation. Based on these results, our phantom model is recommended as a model for the creation of phantom limb model. Consequently, this model is a much more affordable alternative and easy to produce, it facilitates to work with any organ model in ultrasound imaging for healthcare practitioners.

Research paper thumbnail of Development of Radiant Warmer Thermal Monitoring System to Improve Neonatal Patient Safety

Journal of Intelligent Systems with Applications

Temperature measurement is a vital part of daily newborn care. In temperature measurement, accura... more Temperature measurement is a vital part of daily newborn care. In temperature measurement, accurate measurements must be taken to detect deviations from expected values for the incubator and radiant heater function. Monitoring the temperature is keeping the baby in a thermoneutral environmental zone. The study tested body surface temperature under various clinical conditions using an affordable infrared thermography imaging technique. Temperature distributions are displayed as real-time videos and analyzed to evaluate average skin temperatures. This study demonstrates the design and implementation of a virtual temperature sensing application that can help neonatologists provide additional security to a newborn's skin temperature. The influence of different environmental conditions inside the radiant heater with respect to the surface temperature has been verified.

Research paper thumbnail of Development of Invasive Blood Pressure Simulator Design for Testing and Calibrating

2020 Medical Technologies Congress (TIPTEKNO), 2020

Patient monitor modules have various inputs for many vital function measurements. Blood pressure ... more Patient monitor modules have various inputs for many vital function measurements. Blood pressure measurement, one of the most important of these measurements, is included in the biomedical engineering field. This study is about the design and implementation of a programmable invasive blood pressure simulator. This device can generate the programmable behavior of the voltage signal corresponding to the blood pressure curve. The user communication interface of the device allows to select the type of signal produced with the LCD and 3 buttons. Broad spectrum of the generated signals corresponding to physiological or pathological blood pressure curves are stored in a programmable memory. The input and output connectors of the device can be directly connected to a patient monitor or IBP Kit to IBP module input. Invasive blood pressure measurement simulation can be used in IBP Kits and monitors developed for training and calibration purposes.

Research paper thumbnail of Investigating Ballistic Gelatin Based Phantom Properties for Ultrasound Training

The simulation has become an important tool for healthcare practitioners who have difficulty in a... more The simulation has become an important tool for healthcare practitioners who have difficulty in accessing patients to learn ultrasound imaging modes. The ultrasound phantoms are specially designed objects that are used or imagined to evaluate, analyze and adjust the performance of test devices. These phantoms for ultrasonography devices are expensive, and low-cost alternatives have provided an educational experience that does not give the best result. Ballistic gelatin is a member of the 250-Bloom hydrogel family that resembles human muscle tissue in terms of its mechanical properties. The 250-Bloom Ballistic Gelatin (BG) is prepared with different mixing ratios to be made the mechanical tests such as gunshot, compression and electrical conductivity measurement. The results are compared with the mechanical results of human muscle tissue in order to measure the similarity of the 250-Bloom BG we prepared to human muscle tissue. It is showed that the 250-Bloom BG phantom model has very...

Research paper thumbnail of Wireless Transmission of Heart Rate and Blood Pressure Measurements for Remote Patient Monitoring

2019 Medical Technologies Congress (TIPTEKNO), 2019

This paper describes the development of a wireless pulse and blood pressure monitoring system bas... more This paper describes the development of a wireless pulse and blood pressure monitoring system based on a microprocessor with low cost. It is aimed to receive blood pressure information (tension) through certain processes such as amplifying and filtering of the signal which is obtained by using BIOPAC SS19LA Blood Pressure Cuff and Transducer. With the designed prototype, it is possible to determine both systolic and diastolic pressure. Following preprocessing of the signal, the information of blood pressure and heart rate data of the patient is wirelessly transmitted to smartphone by using Bluetooth Module. The wireless system is used to transmit the measured data to a remote location. In this way, the biomedical parameters obtained from the patient can be instantly transmitted to any pre-paired smart phone and also recorded in the corresponding device.

Research paper thumbnail of Investigation of ballistic gelatin based phantom models for computed tomography, x-ray and ultrasound imaging devices

Simulation-based medical education provides a learner-centered environment in which novice, inter... more Simulation-based medical education provides a learner-centered environment in which novice, intermediate and advanced practitioners can learn or practice their skills without harming patients. Medical device phantoms are specially designed objects that are used in simulation based trainings as well as technical features such as evaluating, analyzing and adjusting the performance of devices. Ballistic gelatin is a member of the 250A-Bloom hydrogel family, which mimics human muscle tissue in terms of mechanical properties. In this study, ballistic gelatinbased phantoms were produced and examined on medical device images. According to the results, it is suggested to use phantom models as a medical device phantom in device training. The main advantages of these models are that their production is practical and economical.

Research paper thumbnail of Investigating EEG Based Marker for Diagnosis of Mathematical Difficulties

2020 28th Signal Processing and Communications Applications Conference (SIU), 2020

Mathematical difficulty in mathematics, also known as Dyscalculia, is a learning disability that ... more Mathematical difficulty in mathematics, also known as Dyscalculia, is a learning disability that makes it difficult to comprehend numbers and symbols and to perform mathematical calculations. Generally, it's known as the mathematical version of dyslexia. In this study, Hjorth parameters were used to analyze the change of EEG signals during mental arithmetic task for multifractal analysis of EEG signals. Other features such as relative power and statistical properties were also analyzed. This study may provide an alternative diagnostic method for some psychological disorders such as arithmetic learning and difficulties in understanding, and mathematical difficulties. The aim of the study is to provide a simple test and feature extraction for the diagnosis of mental illnesses and mathematics difficulties at an early age. For this purpose, the data are taken from the same number of participants who do good and bad at math problems. We found that ratio of theta band's amplitudes...

Research paper thumbnail of Lower limb phantom design and production for blood flow and pressure tests

The EuroBiotech Journal

Phantoms are specifically designed objects that are utilized or imaged to evaluate, analyze and t... more Phantoms are specifically designed objects that are utilized or imaged to evaluate, analyze and tune the performance of experimental devices. In this project, it is aimed to design a phantom that responds in a similar manner with how human blood circulation would act in specific flow and pressure tests such as pulse measurement. Ballistic gelatin is a member of hydrogel family with 250 Bloom value which resembles human muscle tissue in terms of mechanical features. That’s why we carried out a uniaxial compression test on our gelatin sample to analyze its similarity of human muscle tissue in terms of elastic modulus, stiffness and rupture strength. Test results indicated that our gelatin sample has approximate values with organic human muscle tissue. Designed model was X-rayed and the similarities of the model to human texture were compared. After producing of lower limb phantoms, we carried out a circulation test through them by the aid of a peristaltic pump to simulate the actual b...

Research paper thumbnail of Lower limb phantom design and production for blood flow and pressure tests

The EuroBiotech Journal, Oct 27, 2017

Phantoms are specifically designed objects that are utilized or imaged to evaluate, analyze and t... more Phantoms are specifically designed objects that are utilized or imaged to evaluate, analyze and tune the performance of experimental devices. In this project, it is aimed to design a phantom that responds in a similar manner with how human blood circulation would act in specific flow and pressure tests such as pulse measurement. Ballistic gelatin is a member of hydrogel family with 250 Bloom value which resembles human muscle tissue in terms of mechanical features. That's why we carried out a uniaxial compression test on our gelatin sample to analyze its similarity of human muscle tissue in terms of elastic modulus, stiffness and rupture strength. Test results indicated that our gelatin sample has approximate values with organic human muscle tissue. Designed model was X-rayed and the similarities of the model to human texture were compared. After producing of lower limb phantoms, we carried out a circulation test through them by the aid of a peristaltic pump to simulate the actual blood circulation of human body limbs. This designed phantom is made ready for available flow and pressure tests.