ArticleFrontiers in oncology2026
Study on the application of thermo-optical surface monitoring + X-ray guidance system in DIBH for breast cancer.
Article in Frontiers in 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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7 authors.
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Abstract
Objective: To evaluate the clinical value of thermo-optical surface monitoring + X-ray guidance system(ExacTrac Dynamic, ETD) in assessing inter-fraction setup accuracy and intra-fraction motion monitoring during deep inspiration breath-hold (DIBH) radiotherapy after breast-conserving surgery for breast cancer. Methods: Clinical data were collected from 31 female patients with breast cancer who had undergone breast-conserving surgery. Cone-beam computed tomography (CBCT) was used to verify inter-fraction setup during the first three treatment fractions, as well as the 6th, 9th, 12th, and 15th fractions. Triple thermo-optical surface tracking, intra-fraction CBCT, and X-ray imaging were employed to monitor intra-fraction motion. Setup errors and treatment duration were recorded. Linear mixed-effects models were applied to analyze inter-fraction setup errors derived from CBCT and intra-fraction errors measured by X-ray. Results: After X-ray correction, mean setup errors in all dimensions were not significantly different from zero ( Conclusion: ETD provides setup accuracy comparable to CBCT with lower radiation dose, making it appropriate for inter-fraction verification. It allows stable real-time intra-fraction monitoring and can enhance treatment precision with mid-treatment X-ray correction.
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