Real-time high spatial resolution dose verification in stereotactic motion adaptive arc radiotherapy

Novel in - treatment dose verification methods for adaptive radiotherapy ”

Radiotherapy is one of the main treatment modalities to treat cancer. Image based treatment verification has been recently introduced. However, a quantitative comparison between the planned and delivered dose is a novel development in the field of radiotherapy. In this thesis, the added value of quantitative in-treatment dose measurements techniques to facilitate adaptive radiotherapy has been ...

Safety of high-dose-rate stereotactic body radiotherapy

BACKGROUND AND PURPOSE Flattening filter free (FFF) beams with high dose rate are increasingly used for stereotactic body radiotherapy (SBRT), because they substantially shorten beam-on time. The physical properties of these beams together with potentially unknown radiobiological effects might affect patient safety. Therefore here we analyzed the clinical outcome of our patients. MATERIAL AND...

Real‐time intrafraction prostate motion during linac based stereotactic radiotherapy with rectal displacement

BACKGROUND Kilovoltage Intrafraction Monitoring (KIM) is a method which determines the three-dimensional position of the prostate from two-dimensional kilovoltage (kV) projections taken during linac based radiotherapy treatment with real-time feedback. Rectal displacement devices (RDDs) allow for improved rectal dosimetry during prostate cancer treatment. This study used KIM to perform a prelim...

Real-Time Intrafraction Motion Management During Radiotherapy

Real-time intra-fraction target tracking is a technique that enables adjustment of the target radiation while it is being delivered (i.e., intra-fraction adjustments) to compensate for movement of the organ inside the body. Real-time tracking, which may or may not use radiographic images, is one of many techniques referred to as “image-guided radiotherapy” (IGRT). For this policy, realtime trac...

Real-Time Intrafraction Motion Management During Radiotherapy