The anatomy of cancer patients changes between radiation treatment planning and delivery
as well as over the course of radiotherapy. Adaptive radiotherapy (ART) aims to deliver …

Radiation therapy treatments are typically planned based on a single image set, assuming
that the patient's anatomy and its position relative to the delivery system remains constant …

Background and purpose The promise of the MR-linac is that one can visualize all
anatomical changes during the course of radiotherapy and hence adapt the treatment plan …

Purpose: Commercial CT‐based image‐guided radiotherapy (IGRT) systems allow
widespread management of geometric variations in patient setup and internal organ motion …

The current paradigm of radiation therapy has the treatment planned on a snapshot dataset
of the patient's anatomy taken at the time of simulation. Throughout the course of treatment …

Background and purpose Magnetic resonance-guided radiation therapy (MRgRT) has
recently become available in clinical practice and is expected to expand significantly in …

Background and purpose In this report, we describe our implementation and initial clinical
experience using 4D-MRI driven MR-guided online adaptive radiotherapy (MRgOART) for …

Radiation therapy to the prostate involves increasingly sophisticated delivery techniques
and changing fractionation schedules. With a low estimated α/β ratio, a larger dose per …

Adaptive radiotherapy (ART) strategies systematically monitor variations in target and
neighbouring structures to inform treatment-plan modification during radiotherapy. This is …

Background Hybrid magnetic resonance (MR)-Linac systems have recently been introduced
into clinical practice. The systems allow online adaption of the treatment plan with the aim of …