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Comparative analysis of clinical treatment outcomes: Breath-hold vs. free-breathing techniques in liver stereotactic body radiotherapy. | LitMetric
Introduction : The aim of this study was to clarify the safety and efficacy of breath-hold irradiation in liver stereotactic body radiotherapy (SBRT).Methods : A retrospective analysis was conducted on 57 consecutive patients who received SBRT for hepatocellular carcinoma or liver metastases between 2013 and 2021. Breath-hold irradiation was implemented for patients treated after April 2020.Results : The median follow-up period for all patients was 16.4 months (IQR: 7.36-20.9). The 2-year overall survival rate was 64.4% (95% CI: 47.4-77.2), and the local control rate was 84.3% (95% CI: 69.7-92.3) for all patients. The 1-year overall survival was 80.0% (95% CI: 60.8-90.5) versus 82.0% (95% CI: 53.5-93.9) in the free-respiratory (FR) group versus the breath-hold (BH) group, respectively (P = 0.60). The 1-year local control rates were 78.1% (95% CI: 57.5-89.5) in the FR group and 95.7% (95% CI: 72.9-99.4) in the BH group, respectively (P = 0.16). Radiation-induced liver injury, defined by an escalation of ≥2 in Child-Pugh score, was observed in four patients within each group (FR 13% vs. BH 15%). There were no gastrointestinal adverse events of Grade 3 or higher.Conclusion : Breath-hold irradiation can be safely administered and has demonstrated clinical potential in improving local control. Further research into dose escalation using breath-hold techniques is warranted.
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