ArticlePhysics and imaging in radiation oncology2026
Impact of dose reporting modes on dosimetric accuracy in a national end-to-end stereotactic spine radiotherapy audit.
Article in Physics and imaging in radiation oncology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background and purpose: Spinal Stereotactic Body Radiotherapy (SBRT) is among the most complex treatments currently delivered. A multi-centre dosimetry audit evaluated the accuracy of spinal SBRT treatment delivery and the impact of different dose reporting modes (DRM). Methods and materials: The audit used anthropomorphic phantoms containing alanine in the Planning Target Volume (PTV) and Gafchromic™ EBT3 film in the axial plane, with a combination of onsite and remote audits due to Covid travel restrictions. Centres used their local planning protocol and technique to create a clinically acceptable treatment plan, following national guidance. Results: Fifty-nine plans from 44 treatment planning systems at 41 centres were analysed. The mean PTV dose difference was 1.2% [-6.5-8.5%] with alanine and 1.0% [-7.0-8.5%] within the 100% isodose for film. Alanine measurements were, on average, higher than the calculated dose for all plans, but lower for the D Conclusions: This audit demonstrated that the majority of centres are delivering spinal SBRT consistently, with acceptable dosimetric and geometric accuracy. However, it also highlighted the challenges of verifying doses reported in D
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