| zurück Home | Stereotaktische Bestrahlung von Hirn - Metastasen | |||||||
| allgemeines | SRS | stereotactic radiosurgery | Stereotaktische Radiochirurgie | |||||
| ZV | CTV: Kontur im MRT, PTV: CTV + 2 mm (Mdb. 2026) | |||||||
| Dosierung | 1x 20Gy; 80%-Isodose 1x 18Gy 27 Gy; ED 9 Gy, 3x auf 80% Isodose (Mdb. 2026) 30Gy, ED 6Gy, 5x 35 Gy, ED 5 Gy, 7x | |||||||
| SRS post OP | Resektionshöhle: 30Gy; ED 5Gy, 6x 10x 3,5Gy, GD 35Gy ZV: Resektionshöhle = CTV CTV + 3 mm = PTV | |||||||
| WBRT + SRS | Indikation: zahlreiche kleine + einzelne große Metastasen | Dosierung 30 Gy; ED 3 Gy + SIB 40 Hy; ED 4 Gy | ||||||
| SRS Hirnstamm | RIC: radiation-induced changes (9) | Dosis: 16 Gy (13 - 23 Gy) | Risiko für RIC PTV ≥ 1 ml D0.5 ml ≥ 15 Gy D5% ≥ 6 Gy D95% ≥ 1 Gy keine RIV im Mittelhirn und Pons beobachtet | |||||
SRS: MD Anderson |
Eine postoperative, stereotaktische Bestrahlung nach Operation von 1-3 Hirnmetastasen bis 4cm
vermindert das Risiko einer erneuten Hirnmetastasierung, nicht aber das Gesamtüberleben (7).
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WBRT und SIB |
Dosierung nach HIPPORAD | Ganzhirn 30 Gy; ED 2,5 Gy SIB 51 Gy; ED 4,25 Gy Hippokampusschonung | ||||||
Quellen |
1.) Addeo R, et al.: Concomitant treatment of brain metastasis with whole brain radiotherapy (WBRT) and Temozolomid (TMZ) is active and improves Quality of Life. BMC Cancer 7(2007): doi:10.1186/1471-2407-7-18 2.) Kocher M,et al.: Adjuvant Whole Brain Radiotherapy vs. Observation after Radiosurgery or Surgical Resection of 1–3 Cerebral Metastases - Results of the EORTC 22952-26001 Study. JCO 29(2011):134-141 3.) Aoyama H, et al.: Stereotactic radiosurgery plus whole - brain radiation therapy vs. stereotactic radiosurgery alone for treatment of brain metastases: a randomized controlled trial. JAMA 295(2006):2483-2491 4.) Chang EL, et al.: Neurocognition in patients with brain metastases treated with radiosurgery or radiosurgery plus whole-brain irradiation: a randomised controlled trial. Lancet Oncol 10(2009):1037-44. doi: 10.1016/S1470-2045(09)70263-3 5.) Hasan S, et al.: The role of whole-brain radiation therapy after stereotactic radiation surgery for brain metastasis. Pract Radiat Oncol 4(2014):306-315 6.) Lin X, DeAngelis LM: Treatment of Brain Metastases. J Clin Oncol 2015; 33: 3475–84. 7.) Mahajan A, Ahmed S, McAleer MF, et al.: Post-operative stereotactic radiosurgery versus observation for completely resected brain metastases: a single-centre, randomised, controlled, phase 3 trial. Lancet Oncology 2017;18: 1040–8 8.) Sofietti R, et al.: Diagnosis and treatment of brain metastases from solid tumors: guidelines from the European Association of Neuro-Oncology. Neuro Oncol 2017;19:162-174 9.) Singh R, et al.: Dosimetric predictors of toxicity for brainstem metastases and AVMs treated with stereotactic radiosurgery: An international, multi-institutional analysis. Radiotherapy and Oncology 206 (2025) 110795 | |||||||
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