Real-time tumor-tracking radiotherapy for adrenal tumors
作者： Norio Katoh , Rikiya Onimaru , Yusuke Sakuhara , Daisuke Abo , Shinichi Shimizu
DOI: 10.1016/J.RADONC.2008.03.013
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摘要: Abstract Purpose To investigate the three-dimensional movement of internal fiducial markers near adrenal tumors using a real-time tumor-tracking radiotherapy (RTRT) system and to examine feasibility high-dose hypofractionated for tumors. Materials methods The subjects considered in this study were 10 9 patients treated with RTRT. A total 72 days prone position 61 treatment days supine nine analyzed. All but one patient prescribed 48 Gy eight fractions at isocenter. Results average absolute amplitude marker was 6.1 ± 4.4 mm (range 2.3–14.4), 11.1 ± 7.1 mm (3.5–25.2), 7.0 ± 3.5 mm (3.9–12.5) left–right (LR), craniocaudal (CC), anterior–posterior (AP) directions, respectively. 3.4 ± 2.9 mm (0.6–9.1), 9.9 ± 9.8 mm (1.1–27.1), 5.4 ± 5.2 mm (1.7–26.6) LR, CC, AP Of markers, which examined both positions, there no significant difference between two positions. No symptomatic adverse effects observed within median follow-up period 16 months 5–21 months). actuarial freedom-from-local-progression rate 100% 12 months. Conclusions Three-dimensional motion detected. Hypofractionated RTRT feasible metastatic
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