【摘 要】
：
Objective: To explore the influence of image-guided tumor localization modality (Synchrony tracking versus Xsight spinebased localization) on the local efficacy of CyberKnife treatment in lung cancer
【机 构】
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Tianjin Cancer Institute and Hospital,Medical University,Tianjin,China
【出 处】
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22nd Asia Pacific Cancer Conference(第22届亚太抗癌大会)
论文部分内容阅读
Objective: To explore the influence of image-guided tumor localization modality (Synchrony tracking versus Xsight spinebased localization) on the local efficacy of CyberKnife treatment in lung cancer and lung metastases.Methods: This study employed a retrospective analysis of 64patients with pulmonary metastases and primary tumor cases(72 targets) treated with stereotactic body radiotherapy using CyberKnife.Synchrony respiratory tracking was used to treat45 targets, and the remaining 27 targets were treated using Xsight spine (with an extended margin to account for positional uncertainty).The median (80％) isodose line (70％ to 94％)covered the PTV target volume at a total dose of 6000 cGy delivered in three fractions.Local efficacy was evaluated using the RESCIST criteria, accompanied by a follow-up of local recurrence cases and analysis of tracking methods.
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