Physics of External Radiotherapy and Brachytherapy
Keywords |
Classification |
Keyword |
OFICIAL |
Physics / Medicine |
Instance: 2024/2025 - 1S
Cycles of Study/Courses
Teaching Staff - Responsibilities
Teaching language
Suitable for English-speaking students
Objectives
Knowing the principles of basic and clinical dosimetry of the External Radiotherapy and Brachytherapy. Relate the acquired physical concepts with the dynamics of a clinical service and its specific application at every stage.
The student must be able to identify and quantify a number of specific characteristics of the treatment devices. The combination of imaging techniques used at each stage of a radiotherapy and brachytherapy in the planning as well as in the several treatment techniques. The ability to differentiate the approved quality control for each step and for each technique.
Learning outcomes and competences
The teaching methodology for this CU is divided in theoretical, theoretical-practical and clinical environment practical classes. The theoretical classes consist in the presentation of basic concepts of External Radiotherapy and Brachytherapy. In the theoretical-practical classes the students are invited to solve a group of exercises, covering the basic principles of the CU. The practical classes in clinical environment predict the calibration of a linear accelerator allowing the knowledge consolidation of the acquired concepts in the theoretical classes, both technical level and used quality control material.
Working method
Presencial
Program
The program of this CU is divided into 3 modules:
- Basic dosimetry of External Radiotherapy
Radiotherapy: types of beams, beam modifiers. Description of the basic components of a linear accelerator: kilovoltage and megavoltage units, and auxiliary systems. Characterization of the radiation beam: photons and electrons. Quality Control in External Radiotherapy. Protocols of determination of absorved dose in reference conditions.
- Clinical Application of External Radiotherapy
Radiotherapy treatment procedure. Imaging for External Radiotherapy. Target volumes and organs at risk contouring. Calculation algorithms based on corrections and models. Clinical dosimetry. Special techniques in External Radiotherapy. Quality control of planning systems and treatments.
- Brachytherapy
Classification of treatments and knowledge of pathologies. Radiation sources: ideal and real. Dosimetry systems and their calculations. Quality control of high dose rate devices.
Mandatory literature
Schlegel, W., Bortfeld, T., Grosu, A.-L; New Technologies in Radiation Oncology, Springer, 2006
International Commission on Radiation Units and Measurements; Prescribing, Recording, and Reporting Intensity-Modulated Photon-Beam Therapy (IMRT) (ICRU Report 83), Oxford University Press, 2010. ISBN: 1742-3422
Pam Cherry, Angela Duxbury; The Physics of Radiation Therapy and equipment,, Wiley-Blackwell, 2009
E. B. Podgorsak et al; Radiation Oncology Physics: a Handbook for Teachers and Students, IAEA, 2005
Peter Metcalte, Thomas Kron, Peter Hoban; The Physics of Radiotherapy X-rays from Linear Accelerators, Medical Physics Publishing, 1997
Faiz M. Khan; Practical Radiotherapy: Physics, Williams & Wilkins, 1994
IAEA; TRS398 - Absorbed Dose Determination in External Beam Radiotherapy: An International Code of Practice for Dosimetry based on Standards of Absorbed Dose to Water,
Teaching methods and learning activities
Theoretical and theoretical-practical classes (T and TP) with exposition of basic concepts, problem solving and practical classes (P) in a hospital environment for consolidation and application of all program content.
MODULE EVALUATION:
Evaluation at the end of each module, lasting 1 hour.
Practical class report.
The student must have success (>9.5 values) in the evaluation of each module. Otherwise, the appeal will be examined at the respective time.
FINAL GRADE
The final grade will be according to the following formula:
Final grade = 6x (Grade in Module I) + 6x (Grade in Module II) + 3 Grade practical class report 5x (Grade in Module III)]/20
NOTE: Attendance dates will be agreed in the beginning of the semestre. In case of failure to attend one of the exams, the student goes directly to the final exam. Other exams that have already been taken wil not be considered.
Evaluation Type
Distributed evaluation with final exam
Assessment Components
designation |
Weight (%) |
Exame |
100,00 |
Total: |
100,00 |
Amount of time allocated to each course unit
designation |
Time (hours) |
Estudo autónomo |
100,00 |
Frequência das aulas |
42,00 |
Total: |
142,00 |
Eligibility for exams
The student must have success (>9.5 values) in the evaluation of each module.
Calculation formula of final grade
Final grade = 6x (Grade in Module I) + 6x (Grade in Module II) + 3 Grade practical class report 5x (Grade in Module III)]/20
Classification improvement
For rating improving final examination can be perfomed in the respective period.
Observations
Juri:
Anabela Gregório Dias
Luís Paulo Teixeira Cunha