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Measurement and analysis of the blood flow in peripheral vessels by ultrasound Doppler methods
Lepš, Milan ; Sedlář, Martin (referee) ; Vlk, Daniel (advisor)
Nowadays, the Doppler ultrasonography is an essential part in medicine. With it, we can observe acoustic showoff some tissue associated with Doppler measurement of blood flow parameters. It is still using Doppler devices with a continuous signal which are although structurally and technically simpler, but they are suitable for measuring the speed and volume of blood flow in peripheral blood vessels of the upper and lower limbs. There are calculated physiological parameters from the flow curves that are clinically used for assessing the state of blood supply to the body part. We can determine many values from the flow curves, like peripheral resistance, blood flow in systole and diastole, medium speed, etc. Study group of people are male and female students from 18 to 20 years. Doppler measurements have been performed before physical exercise and after physical exercise.
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Iinfrared thermography and handheld ultrasound doppler during exercise test
Urbanová, Lucia ; Vlk, Daniel (referee) ; Staffa,, Erik (advisor)
Semester project elaborates theoretical part of bachelor thesis, which is going to process results of measurements performed by infrared thermography and Doppler ultrasonography during physical tests on volunteers. The theoretical part contains basics of infrared thermography, where physical quantities, laws and principles are explained. The basic of Doppler ultrasonography are explained as well. In practical part will be statistically analyzed data measured by a thermal imager and Doppler ultrasonography. Study group of people will form students aged from 18 to 25 years. Thermographic and Doppler measurements will be performed before exercise and after exercise. The aim is to find a correlation between processed data.
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Software for analysis of body surface temperature changes before and after exercise
Remenárová, Veronika ; Bernard, Vladan (referee) ; Vlk, Daniel (advisor)
This thesis focuses on creating an application software for monitoring and analyzing changes in body surface temperature before and after exercise test by the means of contactless thermography. Initial, theoretical part of this thesis talks about principles and possible scenarios, in which one could employ infrared thermography followed by physiology of the exercise load and concludes with an observation of the changes in body surface temperature while focusing on the actions that take place during the exercise test. Practical part of the thesis comprises of the exercise test and building of the application software for the analysis of the acquired thermographic visual output. The application software offers 2 kinds of analyses: general and under-load, while it aims to provide evaluation in both cases based on user-selected areas of interest. Last chapter of this thesis includes final output with commentary and eventual usage of the under-load experiment and application software in practical use.
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Binaural hearing aid correction with one power supply
Novotná, Eliška ; Kolářová, Jana (referee) ; Vlk, Daniel (advisor)
This thesis will be devoted to binaural hearing correction with single source power. This correction is aimed at elderly patients who are most likely to have presbycusis. The theoretical part is focused on individual types of hearing loss, possibilities of their audiology tests, also about theory of hearing aids. The practical part contains a model of hearing aid and a possible way of testing. The work compares binaural corrections with proposed model.
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Binaural hearing aid correction with one power supply
Novotná, Eliška ; Kolářová, Jana (referee) ; Vlk, Daniel (advisor)
This thesis will be devoted to binaural hearing correction with single source power. This correction is aimed at elderly patients who are most likely to have presbycusis. The theoretical part is focused on individual types of hearing loss, possibilities of their audiology tests, also about theory of hearing aids. The practical part contains a model of hearing aid and a possible way of testing. The work compares binaural corrections with proposed model.
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Evaluation of biosignals and quality assessment of heart assist devices
Kalužová, Adéla ; Vlk,, Daniel (referee) ; Bernard,, Vladan (advisor)
The first part of this bachelor thesis deals with technical problems of apparatuses for heart assistance Heart Mate II LVAD and Levitronix, which are connected with components of apparatuses, parametrs of apparatuses, function of apparatuses, indications and contraindications. In the next part there is description of various biosignals, which are measured according to application of heart support aparatuses. The next aim of this bachelor thesis is suggestion of evalution biosignals, which are monitored and collection of clinical data in which I will statistically evaluated the results and these results will be compared each other and with physiological values. The final aim of this thesis is a reflection of the advantages and disadvantages of the apparatus and discussion.
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Comparison of selected hemodynamic parameters and body surface temperature between athletes and normal population after exercise
Remenárová, Veronika ; Forýtková, Lenka (referee) ; Vlk, Daniel (advisor)
The thesis deals with monitoring of hemodynamic parameters, body surface temperature of population and changes in these physical parameters caused by physical exercise. This thesis includes literary research from mentioned area, focusing mainly on pulse, blood pressure, blood flow, its velocity and body surface temperature, in meaning of their resting values, methods of measurement and their changes caused by exercise. Twenty women, 10 sportswomen and 10 women from normal population will undergo two types of exercise test to monitor changes in chosen hemodynamic parameters and to compare different groups of women. This part is followed by quantitative and statistical analysis of the measured data.
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Effects of ultrasound on biological materials
Peprníčková, Anna ; PhD, Vladan Bernard, (referee) ; Vlk,, Daniel (advisor)
In this bachelor thesis I deal with effects of ultrasound on biological materials. In theoretical part is write up a literature search about effects of ultrasound on bimacromolecules namely deoxyribonucleic acid (DNA), proteins (BSA) and bacterial cells. Effects of ultrasound was investigated practically on genetically modified bacterias of Escherichia coli. These bacterias were sounded by ultrasound by various frequences for the same time and then their viability was measured on luminometer. The results for ever frequency were compared.
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Tensiomyography – measurement uncertainty analysis
Sikorová, Pavlína ; Mornstein, Vojtěch (referee) ; Vlk, Daniel (advisor)
This bachelor’s thesis deals with the analysis of measurement uncertainty during the tensiomyographic measuring. Seven factors have been suggested (i.e. uncertainties), that may cause an error in measurement. Their influence on the measured parameters was tested in a series of experiments on m. biceps femoris and m. biceps brachii of two subjects. The results of these tests were then compared with the referential values from the physiotherapist and the device manufacturer. Based on this comparison, the extent of uncertainty of diagnostically essential parameters Dm and Dc has been designated. Dm is heavily influenced by six parameters out of seven, whereas Tc is influenced only by one.
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