Radiation Oncology/Adaptive radiotherapy

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Adaptive radiotherapy includes gating, tumor tracking, etc. RT treatment planning has traditionally been a static process - whereby a plan is generated based on a single snapshot of the patient's anatomy and delivered over a number of weeks. However, IGRT approaches will most likely transform this static process into a dynamic one, whereby plans are altered throughout the treatment course or perhaps even throughout the treatment fraction.

4-D RT

PMID 15817360, 2005 — "Four-dimensional image-based treatment planning: Target volume segmentation and dose calculation in the presence of respiratory motion." Rietzel E et al. Int J Radiat Oncol Biol Phys. 2005 Apr 1;61(5):1535-50.