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Radiotherapy planning
Požár, Pavel ; Sekora, Jiří (referee) ; Kolářová, Jana (advisor)
This thesis deals with analysis of characteristics of ionising radiation. The equipments used for irradiation of pathologic findings are described. The thesis contains particular stages of planning algorithm with list of individual actions. Practical part contains a description of application made for irradiation simulation which includes brief explanation of working procedure with program. It also contains a description of individual functions of this application.
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Brachytherapy of gynaecological malignant tumor
KURÁŽOVÁ, Kristýna
The topic of this bachelor thesis is brachytherapy of gynaecological malignancy. In the theoretical part, the anatomy of female sex organs, general principles of brachytherapy, gynaecological applications of brachytherapy and malignant gynaecological diseases treated by this method, are described. The theoretical part is elaborated out of scientific publications, articles and web pages, in the form of literary research. The output of this research is the summary of knowledge about brachytherapy of gynaecological malignancy and thus, the creation of educational text, which was the primary objective of this thesis. Secondary objective of the thesis was to compare doses to the critical organs the bladder and the rectum, during the uterovaginal applications, depending on the type of the used applicator the Fletcher applicator and the Ring applicator. The data for the practical part were obtained from the archived radiation protocols of the oncological department of the Hospital České Budějovice a.s. and then the data were carried out in to charts. Two units of patients, treated for cervical carcinoma by uterovaginal application in years 2008 2018, were compared. The results indicate that the average doses to the bladder are almost identical for both applicators, but the doses are lower by 0,09 Gy for the Fletcher applicator, than for the Ring applicator. The average dose to rectum is, however, lower by 1,136 Gy while using the Ring applicator. That suggests that using of the Ring applicator during uterovaginal application is more advantageous for saving the rectum, considering the applied radiation dose. The initial hypothesis that for using the newer Ring applicator the doses to the critical organs are lower, then for the Fletcher applicator, was neither confirmed nor rejected, according to the results obtained.
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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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Radiotherapy planning
Požár, Pavel ; Sekora, Jiří (referee) ; Kolářová, Jana (advisor)
This thesis deals with analysis of characteristics of ionising radiation. The equipments used for irradiation of pathologic findings are described. The thesis contains particular stages of planning algorithm with list of individual actions. Practical part contains a description of application made for irradiation simulation which includes brief explanation of working procedure with program. It also contains a description of individual functions of this application.
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