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PLANNING NATIONAL RADIOTHERAPY SERVICES [PDF]
Countries, states and island nations often need forward planning of their radiotherapy services driven by different motives. Countries without radiotherapy services sponsor patients to receive radiotherapy abroad.
Eduardo eRosenblatt
doaj +7 more sources
Visualising the urethra for prostate radiotherapy planning. [PDF]
AbstractIntroductionThe prostatic urethra is an organ at risk for prostate radiotherapy with genitourinary toxicities a common side effect. Many external beam radiation therapy protocols call for urethral sparing, and with modulated radiotherapy techniques, the radiation dose distribution can be controlled so that maximum doses do not fall within the ...
Richardson M+8 more
europepmc +6 more sources
Robust radiotherapy planning [PDF]
Motion and uncertainty in radiotherapy is traditionally handled via margins. The clinical target volume (CTV) is expanded to a larger planning target volume (PTV), which is irradiated to the prescribed dose. However, the PTV concept has several limitations, especially in proton therapy. Therefore, robust and probabilistic optimization methods have been
Jan Unkelbach+14 more
openaire +5 more sources
The choice of optimal radiotherapy technique for locally advanced maxillary carcinoma using 3d treatment planning system [PDF]
Aim. To compare the isodose distribution of three radiotherapy techniques for locally advanced maxillary sinus carcinoma and analyze the potential of three-dimensional (3D) conformal radiotherapy planning in order to determine the optimal technique for ...
Mileusnić Dušan
doaj +3 more sources
The grid-dose-spreading algorithm for dose distribution calculation in heavy charged particle radiotherapy [PDF]
A new variant of the pencil-beam (PB) algorithm for dose distribution calculation for radiotherapy with protons and heavier ions, the grid-dose spreading (GDS) algorithm, is proposed. The GDS algorithm is intrinsically faster than conventional PB algorithms due to approximations in convolution integral, where physical calculations are decoupled from ...
Ahnesjö+29 more
arxiv +5 more sources
Clinical use of positron emission tomography for radiotherapy planning – Medical physics considerations [PDF]
PET/CT imaging plays an increasing role in radiotherapy treatment planning. The aim of this article was to identify the major use cases and technical as well as medical physics challenges during integration of these data into treatment planning ...
Daniela Thorwarth
doaj +2 more sources
Radiotherapy planning for breast cancer
Yasmin Khan
doaj +4 more sources
BackgroundThe use of 18FDG-PET/CT for delineating a gross tumor volume (GTV, also called MTV metabolic tumor volume) in radiotherapy (RT) planning of head neck squamous cell carcinomas (HNSCC) is not included in current recommendations, although its ...
Meriem Maajem+16 more
doaj +1 more source
Repeatability of MRI for radiotherapy planning for pelvic, brain, and head and neck malignancies
Objectives: The objective of this study was to assess the repeatability of MRI for the purpose of radiotherapy treatment planning by considering the difference in registering MRI to MRI compared to registering CT and MRI.Methods: Fifty patients ...
Monique Y. Heinke+9 more
doaj +1 more source
Rectal dosimetry in intracavitary applications of cervix carcinoma: Comparison of two methods [PDF]
BACKGROUND: Brachytherapy of cervix carcinoma often results in high doses to surrounding structures, such as rectum and bladder. Therefore, these organs should be closely monitored.
Baucal Milutin+2 more
doaj +1 more source