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PLANNING NATIONAL RADIOTHERAPY SERVICES [PDF]

open access: yesFrontiers in Oncology, 2014
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]

open access: yesJ Med Radiat Sci, 2021
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]

open access: yesPhysics in Medicine & Biology, 2018
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]

open access: goldVojnosanitetski Pregled, 2004
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]

open access: yesMedical Physics 35(2) 602-607, 2008, 2007
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]

open access: yesZeitschrift für Medizinische Physik, 2023
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

Comparison of Volumetric Quantitative PET Parameters Before and After a CT-Based Elastic Deformation on Dual-Time 18FDG-PET/CT Images: A Feasibility Study in a Perspective of Radiotherapy Planning in Head and Neck Cancer

open access: yesFrontiers in Medicine, 2022
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

open access: yesFrontiers in Physics, 2022
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]

open access: yesArchive of Oncology, 2002
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

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