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Artificial Vocal Folds for Source Voice Generation
Vašek, Martin ; Vampola, Tomáš (referee) ; Kamenický, Ján (referee) ; Mišun, Vojtěch (advisor)
The first part of this work focuses on ways to replace missing source voice in case of patients after total laryngectomy. The commonly used methods of voice rehabilitation are mentioned. Simple computational models are used to explore several principles of generating artificial source voice. Based on the knowledge of how a healthy human voice is generated, one of the ways to generate artificial source voice was chosen – a reed-based element in the configuration (-, +). The function of the reed-based element is based on a periodic bending of the reed and in the airflow cutoff created by this motion. The (-,+) configuration of the reed-based element causes a different behaviour, when compared to healthy vocal folds, important is, however, whether the generated acoustic signal has the right spectral characteristics, which enable the generation of voiced vowels of the human speech. Both experimental and computational models are used to study the behaviour of the reed-based element. The design of the experimental model is based on the preliminary experiments with simple reed-based elements, which were carried out at the beginning of my studies. The new experimental model is designed in such a way, that it enables changes to the reed geometry and its position towards the reed stop. The measurements carried out on the experimental model are mainly acoustical (measurements of the generated acoustical signal), but optical measurements of the reed´s movement and position are possible and used as well. Because of the nature of the reed-based element´s behavior, the fluid structure interaction must be taken into consideration in the computational model. A two-way model of fluid structure interaction is used between the fluid part of the computational model and the structural one. A partitioned solution is used to solve the fluid-structure interaction. The effect of specific input parameters on the function of both models (experimental and computational) is monitored. The influences of input parameters on the basic frequency of the generated signal (source voice), on the stability of the function and on other important characteristics are evaluated. The final chapters focus on the design of voice prosthesis in general. Some specific issues, which need to be solved when designing voice prosthesis, are highlighted.
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Case Study of physiotherapy treatment of a patient with total knee replacement
Benýšková, Veronika ; Maršáková, Kateřina (advisor) ; Hlavičková, Růžena (referee)
Autor: Veronika Benýšková Title: Case Study of physiotherapy treatment of a patient with total knee replacement This bachelor thesis is focused on the issues and physiotherapeutic care of a patient after implantation of total knee replacement. Its general part informs about basic knowledge of knee, about the most common diseases and physiotherapeutical approaches which are being used for patiens with total knee replacement. Special part of this thesis describes case study of a patient with total knee replacement. This case study was worked out during special practice in ÚVN in Prague, Střešovice since 13th January 2011 to 3rd Ferbruary 2011.
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Periradicular therapy in the Hospital Český Krumlov a.s.
KUTIŠOVÁ, Magdalena
This bachelor thesis focuses on the issue of backache and its treatment. Backache is one of the most common diagnosis. The most affected are usually people in their productive age and therefore the economic and social consequences are very significant. There are many techniques used in diagnosis of backache, easier and cheaper techniques are used in the first place. The diagnosis consists of examination of the patient, medical history and clinical examination. The treatment depends on type and progress of the illness. The basic division is acute (4 to 6 weeks) and chronic case (more than 3 months). Another division is common backache, nervous radicular pain and serious illness of spine. I will mainly focus on nervous radicular pain. The basis of the therapy should be active treatment accompanied by physiotherapy. In addition to this therapy, pharmacological treatment is also used. The pharmacological treatment consists of application of nonsteroidal anti-inflammatory drugs, analgesic and also antidepressants. If the conservative therapy is not effective, it is possible to use the least invasive techniques. The most popular one is the periradicular therapy under CT guidance, which is also the subject of this thesis. During the periradicular therapy under CT guidance the needle is being inserted to intervertebral foramen in the area of radicular affected nerve where lytic mixture is then being applied. The lytic mixture is sometimes replaced by ozone with the same effect. When the PRT was first used, it was mainly applied in the area of lumbar spine. Nowadays, it is usually used in treatment of lesion in the area of cervical spine. The objective of this thesis is to describe anatomy of the examined area, physiological and pathological state, the main indications for the periradicular therapy and methods of implementation including the used tools and pharmaceutical. Following part is focused on development of application of this method in the Hospital of Český Krumlov, a.s. the radiodiagnostics department, and to analyse the effectiveness of the treatment. I have conducted analysis and processed data of performed periradicular therapies in the Hospital of Český Krumlov, a.s. from 2010, when the method was introduced, up to 2015. I have made a questionnaire survey of 40 people selected by chance and then I processed the data in order to create a general overview of obtained results. The result of the thesis is that the number of performed periradicular therapies is steadily increasing. One-third increase was recorded from 2010 to 2015. The number of women patients prevails, 53% of patients in the given period were women. The most common age category is 50 to 59 years, this category constitutes 37% of all patients. It was found out that most of the patients were treated just for one or two times. Only 7% of the patients were treated for more than two times. When processing the data from my survey, I have found out that most of the patients are satisfied with the effectiveness of the therapy, which corresponds with the results quoted in the bibliography.
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