SINGLE-ISOCENTER FRAMELESS INTENSITY-MODULATED STEREOTACTIC RADIOSURGERY FOR SIMULTANEOUS TREATMENT OF MULTIPLE BRAIN METASTASES: CLINICAL EXPERIENCE

被引:70
作者
Nath, Sameer K. [1 ,3 ]
Lawson, Joshua D. [1 ,3 ]
Simpson, Daniel R. [1 ,3 ]
VanderSpek, Lauren [1 ]
Wang, Jia-Zhu [1 ]
Alksne, John F. [2 ]
Ciacci, Joseph [2 ]
Mundt, Arno J. [1 ,3 ]
Murphy, Kevin T. [1 ]
机构
[1] Univ Calif San Diego, Rebecca & John Moores Canc Comprehens Canc Ctr, Dept Radiat Oncol, La Jolla, CA 92093 USA
[2] Univ Calif San Diego, Rebecca & John Moores Canc Comprehens Canc Ctr, Dept Surg, Div Neurosurg, La Jolla, CA 92093 USA
[3] Univ Calif San Diego, Rebecca & John Moores Canc Comprehens Canc Ctr, Ctr Adv Radiotherapy Technol, La Jolla, CA 92093 USA
来源
INTERNATIONAL JOURNAL OF RADIATION ONCOLOGY BIOLOGY PHYSICS | 2010年 / 78卷 / 01期
关键词
Single isocenter; Intensity-modulated stereotactic radiosurgery; Frameless; Brain metastases; GAMMA-KNIFE RADIOSURGERY; RADIATION-THERAPY; LUNG-CANCER; RADIOTHERAPY; MANAGEMENT; PERFEXION;
D O I
10.1016/j.ijrobp.2009.07.1726
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Purpose: To describe our clinical experience using a unique single-isocenter technique for frameless intensity-modulated stereotactic radiosurgery (IM-SRS) to treat multiple brain metastases. Methods and Materials: Twenty-six patients with a median of 5 metastases (range, 2-13) underwent optically guided frameless IM-SRS using a single, centrally located isocenter. Median prescription dose was 18 Gy (range, 14-25). Follow-up magnetic resonance imaging (MRI) and clinical examination occurred every 2-4 months. Results: Median follow-up for all patients was 3.3 months (range, 0.2-21.3), with 20 of 26 patients (77%) followed up until their death. For the remaining 6 patients alive at the time of analysis, median follow-up was 14.6 months (range, 9.3-18.0). Total treatment time ranged from 9.0 to 38.9 minutes (median, 21.0). Actuarial 6- and 12-month overall survivals were 50% (95% confidence interval [C.I.], 31-70%) and 38% (95% C.I., 19-56%), respectively. Actuarial 6- and 12-month local control (LC) rates were 97% (95% C.I., 93-100%) and 83% (95% C.I., 71-96%), respectively. Tumors <= 1.5 cm had a better 6-month LC than those >1.5 cm (98% vs. 90%, p = 0.008). New intracranial metastatic disease occurring outside of the treatment volume was observed in 7 patients. Grade >= 3 toxicity occurred in 2 patients (8%). Conclusion: Frameless IM-SRS using a single-isocenter approach for treating multiple intracranial metastases can produce clinical outcomes that compare favorably with those of conventional SRS in a much shorter treatment time (<40 minutes). Given its faster treatment time, this technique is appealing to both patients and personnel in busy clinics. (C) 2010 Elsevier Inc.
引用
收藏
页码:91 / 97
页数:7
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