Introduction:
External beam radiotherapy has advanced from two-dimensional planning to intensity modulated and arc therapies. Clinical use of advanced photon therapy is increasing significantly with intensity modulated radiotherapy (IMRT) use rates constant over three decades.
An Australian and New Zealand survey recorded 46% facilities utilize both IMRT and VMAT and 27% facilities...
INTRODUCTION
Small field dosimetry provides many challenges which are still being resolved so that radiotherapy services can have accurate radiation dosimetry. For small radiation fields, there are various physical conditions that occur including a lack of lateral charged particle equilibrium on the beam axis, the size of the detector is comparable or larger than the field size and there is...
Introduction: The quality and safety of radiotherapy (RT) services in Sub-Saharan Africa has been a subject of major concern, as highlighted in several reports. As for Uganda, it has been delivering 2D treatments since the establishment of radiotherapy services in 1995. In 2016, the only available cobalt-60 teletherapy machine broke down. With the support of IAEA, the service was restored in...
Purpose: The success of the IMRT treatment for nasopharyngeal patients is hampered by many sources of geometric errors and imprecision that can potentially deviate the delivered dose from the planned one, of which positioning errors are essentially noted. In fact, the radiotherapy treatment is spread over several weeks while the ballistics of the treatment are defined on a single fixed CT...
This is a preliminary work of the comparisons of output factor measurements for small fields in different equipment.
Its in process the measurement with being made with EBT3 dosimetry films for the same fields. Measuring small field factors turns out to be a challenge since the ideal detector does not exist. And it is important to take this factor into account because it contributes very...
