Radiotherapy (RT) aims to deliver a spatially conformal dose of radiation to tumours while
maximizing the dose sparing to healthy tissues. However, the internal patient anatomy is …

Clinical radiotherapy procedures aim at high accuracy. However, there are many error
sources that act during treatment preparation and execution that limit the accuracy. As a …

Detection and segmentation of abnormalities on medical images is highly important for
patient management including diagnosis, radiotherapy, response evaluation, as well as for …

A greyscale-based fully automatic deformable image registration algorithm, originally known
as the'demons' algorithm, was implemented for CT image-guided radiotherapy. We …

In the framework of the development of the integration of a MRI-scanner with a linear
accelerator, the influence of a lateral, magnetic field on the dose distribution has to be …

Integrating magnetic resonance imaging (MRI) functionality with a radiotherapy accelerator
can facilitate on-line, soft-tissue based, position verification. A technical feasibility study, in …

Because magnetic resonance imaging–guided radiation therapy (MRIgRT) offers exquisite
soft tissue contrast and the ability to image tissues in arbitrary planes, the interest in this …

Target definition is a major source of errors in both prostate and head and neck external-
beam radiation treatment. Delineation errors remain constant during the course of radiation …

PURPOSE: Recent imaging studies have demonstrated that there can be significant
changes in anatomy from day to day and over the course of radiotherapy as a result of daily …

Purpose The optimal frequency of prostate cancer image guided radiation therapy (IGRT)
has not yet been clearly identified. This study sought to compare the safety and efficacy of …