|
|
Skin dose mapping for fluoroscopically guided interventions in cardiology
Melichar, Ondřej ; Králík, Martin (referee) ; Mézl, Martin (advisor)
The subject of this work is an issue analysis of possible skin damage inflicted during fluoroscopically guided surgery and design of a radiation dose tracking software for patients undergoing an interventional cardiac surgery. The tool is implemented in Unity 3D engine. Mapping is performed by simulating the X-ray machine movement around an anthropomorphic model in conjunction with simulated irradiation using rays emitted from the X-ray machine. The input data needed for dose tracking compose of radiation dose structured report and patient specific biometrics depending on the anthropomorphic model used. Output data is presented as a heatmap mapped directly onto patient’s 3D. This can be used for early diagnostics of radiation dermatitis.
|
|
|
EOG signal processing using Arduino
Typovský, Viktor ; Králík, Martin (referee) ; Harabiš, Vratislav (advisor)
This bachelors thesis deals with scanning and processing EOG signal. Processing means displaying EOG signal detection and eye movement. The theoretical part is first described the formation and properties of EOG signal. Furthermore, they describe factors affecting EOG. The practical part is then given proposal hardware solutions to capture this signal and processing algorithm. Scanning EOG signal is realized by means of the instrumentation amplifier. Its filtration is used lowpass Sallen-Key. It was decided to maintain during scanning DC component of the signal. But that was a problem regarding the electrode potential. This problem would be resolved by the proposed compensation circuit. Processing the resultant signal is then performed in an environment Processing using Arduino platform. EOG imaging algorithm and motion detection functions and is given.
|
|
|
NEW ON THE „OLD“ – Brno, Bratislavská - Stará Corner
Králík, Martin ; Lazarov, Pavel (referee) ; Kratochvíl, Jan (advisor)
Multifunctional building situated on the corner of Bratislava's Old is placed in the gap between the surrounding buildings. The main purpose of this project is to create new housing and public space in the form of passages, park, garden, library and tea rooms. It is especially designed for students, young people and families with children. The ground floor consists of arcade and shops, the second mainly tea room and a library with an associated terrace, the remaining part of the building is used for housing. Under the building are three underground floors used for parking and technical areas of the building.
|
|
| |
|
|
Multifunctional building Jezuitska
Králik, Michal ; Elešová, Klára (referee) ; Dulenčín, Juraj (advisor) ; Šuhajda, Karel (advisor)
This Bachelor thesis is based on my earlier study developed in format AG34, which was further elaborated to a documentation of building permit and execution of the construction. The theme was to propose a polyfunctional house in the center gap of Brno by the Jeziutska street. The gap is situated on a very cut and deep plot where was important to ensure illumination in the central disposition and combine object operations. Since the parcel is in the city memorial reservation of Brno the endurance was put on suitable solution due to the historical stop. The functional content of the building is accommodation and public amenities in the field of culture. The main idea of the proposal was to build a building which will meet all the requirements of the given operation, function and will be a value and an appropriate part of the historic city stop. There was an attempt for a simple and functional form and a minimalist concept of the whole object. This polyfunctional house consists of two functions, public which serves as a gallery and living. The whole object is divided by these functions along the horizontal plane between third and fourth floor. Volume of the construction is based on paddle footprint and the Jezuitska street is adjacent to the sixth floor and the seven-storied. In the central part is atrium along three floors with the lightening and another six floors are following up in the rear part.
|
|
|
Methods for sleep spindles detection from EEG records
Matoušek, Šimon ; Mézl, Martin (referee) ; Králík, Martin (advisor)
This bachelor work focuses on the detection of sleep spindles in EEG signals. The introductory chapter deals with the EEG signal, describes its components and describes the signal recording process. Explains the term sleep spindle and clarifies polysomnography. In the following chapter, some findings concerning studies that examined and practically used individual methods of sleep spindle detection are summarized in the form of research. The practical part of the work is focused on some sleep spindle detectors. At the end of the work is a comparison of the success of these detectors in comparison with other, previously performed studies. The highest success was achieved with the detector based on signal envelope calculation, where the sensitivity was 56.00 \% and the specificity 55.19 %, and also with the detector using wavelet transforms, where the sensitivity was 81.22 % and the specificity 46.15 %
|
|
|
Sleep quality assessment
Benáček, Petr ; Králík, Martin (referee) ; Ronzhina, Marina (advisor)
The topic of this bachelor thesis is an automatic sleep quality assessment using artificial neural network. To assess the quality of sleep were used the movement and heart rate data measured by Apple Watch smartwatch. From these data, statistical variables were calculated. Then were they used as an input to the neural networks. The goal was to automatically identify sleep and wakefulness. In this case, the sensitivity was 89 % and the specificity was 70 %. These values are comparable with other studies. Furthermore, the data were also divided into categories W (wakefulness), NON REM and REM. Parameters evaluating sleep quality, such as TST, % REM or sleep latency, were derived from the output of the neural networks created.
|
|
|
K-complex detection in sleep EEG
Bjelová, Martina ; Mézl, Martin (referee) ; Králík, Martin (advisor)
This paper addresses detecting of K-complexes in sleeping EEG records. Polysomnography is the method, which is used for diagnostic and following therapy of many sleep disorders. For identifnging of sleep stages it is fundamental to know graphoelements, in which they are situate. K-complex is important indicator of second sleep stange and hence is essencial to know to detect this pattern. In this paper we focus on design and implementation of more algorithms for detection of these patterns with various characteristics. Among the proposed methods, the wavelet transform method was best evaluated. Performance of this detection reached values the average senzitivity 63,83 % and average positive predictive value 44,07 %.
|
|
|
Apartment building, Brandýs nad Labem-Stará Boleslav
Králík, Martin ; Osička, Jan (referee) ; Sukopová, Dáša (advisor)
The subject of the bachelor thesis is the documentation for the construction of a residential building in Brandýs nad Labem - Stará Boleslav. The apartment building will be located in a quiet zone of a two-storey building in a future residential development. Residential building is detached. It will be based on flat terrain. The apartment building is L-shaped (it consists of two rectangles). The building has 5 floors and 1 underground floor. There are a total of 19 apartments in the building, technical facilities and storage facilities are located in the underground part of the building. Residential building is basement. The building is covered with a flat vegetation roof. The peripheral above-ground structure is made of therm-shaped blocks, insulated with ETICS contact thermal insulation system. The main entrance to the building is from the northeast side of the building.
|
|
|
Heart rate variability analysis from sleep ECG
Lepková, Kamila ; Kozumplík, Jiří (referee) ; Králík, Martin (advisor)
This bachelor thesis deals with an analysis of heart rate variability from sleep ECG. The thesis is divided into two parts, the first one is theoretical part and describes the physiology of heart and respiratory system, ECG curve, sleeping phases, apnea, and above all analysis of heart rate variability of ECG. In the practical part, using MATLAB software, was developed an algorithm of the analysis. The algorithm was tested on real signals from a publicly accessible database. The difference between the physiological ECG and the ECG with apnea is statistically evaluated using sing parameters from the time and frequency domain. Kruskal-Wallis statistic test confirms that there is a significant difference between the physiological signal and the apnea signal.
|
guest ::
RSS feed.