ArticleClinical and translational radiation oncology2023
Evaluation of short-term gastrointestinal motion and its impact on dosimetric parameters in stereotactic body radiation therapy for pancreatic cancer.
Article in Clinical and translational radiation oncology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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13 citing papers in PubMed, 7 citations in OpenAlex.
- A framework for planning organ at risk volume margin derivation for the small bowel during magnetic resonance-guided radiotherapy.Physics and imaging in radiation oncology · 2026Article
- Assessment of planning organ at risk volume margins in non-adaptive pancreatic stereotactic body radiotherapy.Physics and imaging in radiation oncology · 2026Article
- Dosimetric impact of daily MR-guided adaptive radiotherapy across different anatomical sites.Irish journal of medical science · 2026Article
- Evaluation of the efficacy of plan adaptation in stereotactic body proton therapy for pancreatic cancer.Journal of applied clinical medical physics · 2026Article
- Quantifying intrafractional colon tumor motion on 1.5 T MR-linac cine-MRI and applying anisotropic residual-motion margins for SBRT.Radiation oncology (London, England) · 2026Observational
- Case Report: MR-guided adaptive stereotactic body radiotherapy for splenic metastases: a case series of technical feasibility and early clinical outcomes.Frontiers in oncology · 2026Article
- Workflow to detect exceeded dose constraints in pancreatic stereotactic body irradiation after intrafraction motion during magnetic resonance-guided adaptive radiotherapy using a deep learning-refined contour propagation tool.Physics and imaging in radiation oncology · 2025Article
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- Simulation-free magnetic resonance-guided radiation therapy of prostate cancer.Physics and imaging in radiation oncology · 2024Article
- Intrafraction organ movement in adaptive MR-guided radiotherapy of abdominal lesions - dosimetric impact and how to detect its extent in advance.Radiation oncology (London, England) · 2024Article
- Comparing different boost concepts and beam configurations for proton therapy of pancreatic cancer.Physics and imaging in radiation oncology · 2024Article
- Biomedical advances and future prospects of high-precision three-dimensional radiotherapy and four-dimensional radiotherapy.Proceedings of the Japan Academy. Series B, Physical and biological sciences · 2023Article
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Authors and funding
15 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background: The aim of this study is to quantify the short-term motion of the gastrointestinal tract (GI-tract) and its impact on dosimetric parameters in stereotactic body radiation therapy (SBRT) for pancreatic cancer. Methods: The analyzed patients were eleven pancreatic cancer patients treated with SBRT or proton beam therapy. To ensure a fair analysis, the simulation SBRT plan was generated on the planning CT in all patients with the dose prescription of 40 Gy in 5 fractions. The GI-tract motion (stomach, duodenum, small and large intestine) was evaluated using three CT images scanned at spontaneous expiration. After fiducial-based rigid image registration, the contours in each CT image were generated and transferred to the planning CT, then the organ motion was evaluated. Planning at risk volumes (PRV) of each GI-tract were generated by adding 5 mm margins, and the volume receiving at least 33 Gy (V Results: The median interval between the first and last CT scans was 736 s (interquartile range, IQR:624-986). To compensate for the GI-tract motion based on the planning CT, the necessary median margin was 8.0 mm (IQR: 8.0-10.0) for the duodenum and 14.0 mm (12.0-16.0) for the small intestine. Compared to the planned V Conclusion: The short-term motions of the GI-tract lead to high dose differences.
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