National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
In vivo dosimetry in electron beam radiotherapy
ŘEHÁKOVÁ, Andrea
The theoretical part deals with general description of dosimetry, its physical parametres, types, calibration, calibration factors and quality protection systems together with setting an absorbed dose and choosing a programme suitable to measure it. The research part is aimed at verifying dosimetry parametres of diodes presented by the PTW Freiburg and valid in standard conditions. Next I analysed a dose calibration of diodes, prepare a measument procedure, accomplished the measurement in patients and finally processed it staticly. That lead to making a scheme for placing detectors on a patient and introducing methods to be used while measuring electron fields in patients in the Department of Oncology of the Hospital in České Budějovice. The hypothesis assumed that maximum deviation of an electron field can be {$\pm$} 7%, was proved.
Dose vertification in external radiotherapy with the aid of in vivo dosimetry.
LINHARTOVÁ, Hana
The bachelor thesis shall focus on in-vivo dosimetry assessment at the Department of Radiotherapeutic Oncology of the Thomayer University Hospital with Polyclinic. In-vivo dosimetry is applied in regular intervals in the majority of curative patients, and it is a verification method of particularly the entrance and exit dose of irradiated fields. The thesis is aimed at evaluating this dosimetry as mentioned above, performing a comparison with the planning system, comparing individual doses, and deviations from prescribed doses. This method is independent both of the classical dosimetric procedure and also of the planning system support. Therefore the method is of high importance in the common clinical process of external radiotherapy within the framework of the quality assurance (QA) and quality control (QC) programme.
Technical and physical aspects of TSEI (Total Skin Electron Irradiation) in mycosis fungoides treatment.
ŠIMONOVÁ, Eva
Mycosis fungoides (MF) belong to the main representatives of cutaneous T-cell lymphoma. Signs of malignity are demonstrated or localized predominantly on the skin. Radiotherapy for MF is performed using TSEI (Total Skin Electron Irradiation) technique. TSEI aims to distribute prescribed dose evenly on the whole skin surface into specified depth. Two basic methods of radiation can be used for TSEI {--} stationary or rotational technique. An in vivo dosimetry with the use of TLD (Termoluminiscent Dosimetry) is performed in each patient during TSEI. The goal of this work was to describe technical and physical conditions for radiation therapy in patients with mycosis fungoides using rotational and stationary TSEI technique and to record dose distribution in patients treated in Oncology Department of Nemocnice České Budějovice a. s.

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