Highlights the trade-off between precision and complexity in stereotactic body radiotherapy, noting that active motion management may be necessary for targets with pronounced motion, which has implications for stereotactic arrhythmia radioablation.
The desire for high precision in stereotactic body radiotherapy (SBRT) is ingrained in the radiotherapy community, covering all the usual steps of a course of treatment [1–3]. However, increased precision often comes at the cost of increased complexity and resource consumption. At first glance, clinical outcomes after SBRT appear similar with either passive (internal target volume) or active (gating and tracking) motion management strategies, e.g., for peripheral lung tumours [4]. Upon closer scrutiny, differences in local tumour control and organ-at-risk doses, and thus potential toxicity between active and passive motion management strategies, can be observed for upper abdominal tumours where motion is generally more pronounced [5].
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Fast et al. (2023) studied this question.
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