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Calculation of efficient dose rtg diagnostic irradiation
Bažantová, Lucie ; Drastich, Aleš (referee) ; Rozman, Jiří (advisor)
This bachelor thesis deals primarily with the theory of ionizing radiation and its interaction with matter. It deals particularly with x-radiation and the methods of its use in medicine. The thesis contains a description of the origin of the x-ray image and a description of the techniques of radiography and skiascopy. A list of quantities and units used in radiation physics and in radiation protection has been set out, with regard to assessing the risk involved in the interaction of x-radiation with an organism. In particular, the effective dose and the methods of evaluating this during medical irradiation have been set out. The main parts of the work are an overview of the software environment used in radiation physics and an example of the calculation of an effective dose for a concrete radiographic examination together with a detailed description of the method of calculation. At the end of the thesis there is a table of calculated values and an evaluation of them.
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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.
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Modern Imaging Techniques in Medicine
Pařízek, Aleš ; Neuwirthová, Ludmila (referee) ; Rujbrová, Šárka (advisor)
Cílem této práce je popsat základní principy a fyzikální veličiny spjaté s jednotlivými zobrazovacími metodami a poté jednotlivé metody porovnat. Práce popisuje vznik rentgenového záření, jeho interakci s různými materiály a metody snímaní pro vytvoření obrazů. Dále se práce zabývá základním principem vytvoření 3D obrazů pomocí počítačové tomografie a jednotlivými generacemi tomografických strojů. V poslední části se práce věnuje principu nukleární magnetické resonance a základním parametrům pro vytvoření obrazů pomocí MRI systémů.
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The role of the radiology assistant at operating rooms
KLEMENT, Jan
This bachelor thesis deals with work of radiology assistant in different operating theatres in Nemocnice České Budějovice, a.s. History and the invention of X-ray radiation is summarised in theoretical part. Individual mobile C arms used in operating theatres are described here. Starting with construction, movement to skiassopic modes in which they can operate. A short description of operating theatres in which radiology assistant can work are described here as well. It is Accident and plastic surgery (hereinafter referred to as Traumatology), Neurosurgery, Orthopedic and Urology department. Radiation protection which is very important in protecting personnel from ionising radiation is summarised in the last part. The aim of the thesis was to describe the role of radiology assistant in chosen operating theatres of Nemocnice České Budějovice, a.s. This aim was fulfilled in practical part where procedures of radiology assistant during chosen operations were described. Practical part also includes individual analysis of number and types of most carried out procedures under skiassopic control in the year 2021 from chosen departments. And statistical comparison of increase of operating procedures carried out under skiassopic control in a period of five years. All according to increase of number of new types of operation procedures. The thesis in itself should, from my point of view, be used as an educational text mainly for students and future radiology assistants who will carry out work in operating theatre.
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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.
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Fluoroscopy in Písek Hospital a.s.
VYSOKOMÝTSKÁ, Jiřina
The Fluoroscopy is nowadays increasingly replaced by other investigative methods, including CT examinations and more. Their number is currently falling slowly. The aim of the bachelor thesis was to analyze the possibilities of Fluoroscopy examinations in Hospital Písek, a.s. during 11 years (2006-2016) and potential substitution by other imaging methods. Another target was to compare the results with the statistics in the Czech Republic, which deals in particular with the total number of digestive tract tests carried out from 2007 till 2015 in all radio-diagnostic facilities. The theoretical part deals with Fluoroscopy and everything that belongs to it. It describes what X-ray radiation and its biological effects are. The largest part is devoted to X-ray techniques, contrast substances and Fluoroscopic examination. Describes parts from which Fluoroscopy is comprising. It also focuses on contrast substances, their classification and what double contrast examination is. The last chapters deal with Fluoroscopic examination, which were carried out at the Písek Hospital, a.s.. The data for a practical part of statistic evaluation was obtained from Písek Hospital, a.s. during the four months from December 2016 till March 2017, data collection was carried out in the form of printed operation report. The data was written in tables for each year separately, then divided into tables according to type of examination, sex and age. The simple abstract of the radiology activities and imaging methods for the period 2007-2015 was downloaded from ÚZIS. The downloaded data was focused only for a gastrointestinal tract radiology and a table to compares the data with the research.
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Modern Imaging Techniques in Medicine
Pařízek, Aleš ; Neuwirthová, Ludmila (referee) ; Rujbrová, Šárka (advisor)
Cílem této práce je popsat základní principy a fyzikální veličiny spjaté s jednotlivými zobrazovacími metodami a poté jednotlivé metody porovnat. Práce popisuje vznik rentgenového záření, jeho interakci s různými materiály a metody snímaní pro vytvoření obrazů. Dále se práce zabývá základním principem vytvoření 3D obrazů pomocí počítačové tomografie a jednotlivými generacemi tomografických strojů. V poslední části se práce věnuje principu nukleární magnetické resonance a základním parametrům pro vytvoření obrazů pomocí MRI systémů.
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Investigative methods of gastrointestinal tract
ZATLOUKALOVÁ, Jana
The bachelor thesis deals with investigative methods of examination of the gastrointestinal tract and their frequency in a given period carried out in the Hospital of Milosrdní bratří Brno, Znojmo Hospital and the Hospital of Uherské Hradiště a. s. It is graphically processed amount of medical services carried out during 20092014. Data were obtained from the database od radiodiagnostic department. It also to evaluates the work of radiological assistant during these medical examinations. I tried to point out that the basis of good results of individual tests is not only professionalism, both theoretical and practical knowledge of radiology assistant, but also sensitive and helpful and respectfull psychological support to the patient, which may fundamentally affect the test results.
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Calculation of efficient dose rtg diagnostic irradiation
Bažantová, Lucie ; Drastich, Aleš (referee) ; Rozman, Jiří (advisor)
This bachelor thesis deals primarily with the theory of ionizing radiation and its interaction with matter. It deals particularly with x-radiation and the methods of its use in medicine. The thesis contains a description of the origin of the x-ray image and a description of the techniques of radiography and skiascopy. A list of quantities and units used in radiation physics and in radiation protection has been set out, with regard to assessing the risk involved in the interaction of x-radiation with an organism. In particular, the effective dose and the methods of evaluating this during medical irradiation have been set out. The main parts of the work are an overview of the software environment used in radiation physics and an example of the calculation of an effective dose for a concrete radiographic examination together with a detailed description of the method of calculation. At the end of the thesis there is a table of calculated values and an evaluation of them.
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Skiascopic and skiagraphic examination of the spine with a focus on scoliosis
DOSTÁL, Martin
The spine is the body's support system and a supporting pole to the whole skeleton, therefore it is important to take good care of it to prevent its deformities, such as scoliosis. Scoliosis is a serious illness which can appear at a really young age. Nowadays, it's timely detection and early treatment is achieved through not only expert orthopaedic check-up, but mainly through radiological examination, mostly skiagraphy. In my bachelor thesis named "Skiascopic and skiagraphic examination of the spine with a focus on scoliosis" I deal with skiagraphic and fluoroscopic options of examining the spine, the issues of scoliosis in general and with specific statistical analysis of incidents of scoliotic changes recorded at the Radiological clinic of the University hospital Brno, at the department of adult medicine. In the introduction, I explain the basic anatomy of the spine including the movement possibilities of individual spinal parts, such as tilting or rotation. The differences between cervical, thoracic and lumbar part of the spine, and their individual vertebrae, are described. In the next part, I focus on the basic principles of skiagraphy and fluoroscopy. It's important to realise what these examination techniques involve, how they work and why are they indispensable parts of examination process of scoliosis. The origin of x-rays and its types are explicated. I also devote a little subchapter to digitalisation, because in modern medicine, it's gradually replacing original technology of recording on film screens, and its use requires minor adjustements of the skiagraphy procedure. The third part of the bachelor thesis focuses on individual skiascopic and skiagraphic examinations of the spine. I describe procedures of skiagraphy of the cervical, thoracic and lumbar part of the spine including the projection of the sacrum. I mention special skiagraphic methods performed in the process of intentional detection or observation of scoliotic changes, including telemetric pictures composed into the long format. From the skiscopic examinations, I marginally chose myelography and discography, application of which is currently almost none thanks to modern examination methods such as computed tomography and magnetic resonance imaging. In the next chapter, I'm finnaly dealing with the topic of scoliosis itself. The basic classification according to aetiology is shown, I also explain the difference between idiopathic, congenial and neuromuscular scoliosis. Also, I clarify by what reference is the scoliosis' curvature measured and what terms are used to describe scoliosis. The chapter concludes by brief explanation of therapy used for scoliosis. The second part of the thesis includes my research. I present the goals of the work and anticipated hypothesis. I explain where and in what conditions the data collection took place, including description of the process of telemetrical screening at the forementioned workplace in Brno. I also present outcome achieved by statistical processing of data, including my commentary based on hypothesis and acquired experience. In the discussion, I compared incidents of scoliosis today according to my research with professional literature focused on scoliosis. Furthermore, I mentioned options of spinal issues prevention, including related illnesses. I also enclose suggestion of utilization of my work in practice, which, as I hope, will be a usefull addition to clinical research for University hospital Brno. In the last part of my dissertation, I summarize all my findings from the thesis and enclose, along with the list of used literature and internet links, attachments in the form of expertly described radiographs of scoliotical spines, which I obtained, with the consent of the staff, also ati the University hospital Brno.
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