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Design of radiographic arrangement.
Hrda, Tomáš ; Buganská, Tamara (referee) ; Křenek, Ladislav (advisor)
The subject of this diploma thesis is design of X-ray apparatus for medical intention – an angiographic set which consists of a C-Arm and an angiographic table. The elaboration deals particularly with an attractive organic design, that is aimed to have a positive psychological effect, and with an innovation in construction of apparatus in order to be as various-purpose as possible, to conform to the most exacting requirements and procedures, and to advance diagnostic possibilities in the given category. In the thesis diagnostic procedures, which along with technical and ergonomical factors influence the shape and also the total set conception, are considered. This thesis does not contain a separate display system which is not a part of project.
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Brachytherapy planning with using radiotherapy simulator and C-ARM
POHANKOVÁ, Jana
On the oncology department of Jihlava hospital is used fo rthe purposes os determing the position of resources for planning brachytherapy intended radiotherapeutic simulator. C - arm is used more during surgery. I had the opportunity to compare the two devices in test using a phantom - brachytherapy dice with lead bullets in the exact geometry. The purpose of the test was to find documentation to justify why the use of face radiotherapeutic simulator for planning teletherapy. The work is divided into four chapters. The first chapter deals with the theoretical part. Here describes the types of brachytherapy procedures, briefly also features a simulator and C -arm. Furthermore, there is a simple way explained geometric distortion using the image intensifier as a receptor. The second chapter is devoted to the description technical parameters of both the devices, phantom measurement methodology and method of evaluation of the measurement results. The third chapter presents the results of measurements of the positions of the balls in the phantom and fixed deviation between the determined and declared position for two ways to obtain images in orthogonal projection. The last chapter is devoted to discussion.
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Design of radiographic arrangement.
Hrda, Tomáš ; Buganská, Tamara (referee) ; Křenek, Ladislav (advisor)
The subject of this diploma thesis is design of X-ray apparatus for medical intention – an angiographic set which consists of a C-Arm and an angiographic table. The elaboration deals particularly with an attractive organic design, that is aimed to have a positive psychological effect, and with an innovation in construction of apparatus in order to be as various-purpose as possible, to conform to the most exacting requirements and procedures, and to advance diagnostic possibilities in the given category. In the thesis diagnostic procedures, which along with technical and ergonomical factors influence the shape and also the total set conception, are considered. This thesis does not contain a separate display system which is not a part of project.
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Osteoporosis - radiologic aspects
DAŠEK, Oldřich
OSTEOPOROSIS is a serious generalised bone disease which results in their increased fragility. It appears in the highest rate at older age. Goal Getting familiar with osteoporosis and comparing radiation doses of patients in case of kyphoplastics and vertebroplastics. Comparison of doses on different equipment and among different methods. Effort to cut down doses for both a patient and attending staff on the performance. Methodology In 2007, care was given to 46 patients in our station using percutaneous vertebroplastics and kyphoplastics. An angiographic set (Siemens - axiom artis) and a mobile C-arm (Ziehm - exposcope 8000) were used to navigate the action for 30 and 16 patients, respectively. The measured doses were assessed for the patients, average doses for vertebroplastics and for kyphoplastics were calculated, and these were compared one against the other. We also assessed the dose in relation to the number of treated vertebra for a single patient and anatomical zones of position of these vertebrae. And finally, we determined the average doses for the instruments and compared them one against the other. Results The lowest doses have been achieved in treating vertebral bodies of TH spine, and the highest value appeared in the performance when three vertebrae have been treated together. The results from comparison of the average dose on both instruments show that the average dose of a patient navigated with the angiographic set is by some 55 % lower against patients with the C-arm used. The value measured for kyphoplastics is by some 50 % lower than for vertebroplastics. Conclusion The results of the study show that kyphoplastics is more desirable concerning the dose, but the economic view is against, as well that it suits rather to acute fractures. The benefit of this work is the comparison of the doses for the surgeries on two types of instruments. We have shown that the selection of the suitable instrument can have impact of the resulting dose for the patient, as well the dose for attending staff. In our case, the effect was up to 55%. The outcome will be the effort to perform the maximum of these actions using the angiographic set and to minimise the total dose.
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