White matter changes on magnetic resonance imaging following whole-brain radiotherapy for brain metastases

被引:32
作者
Fujii O. [1 ]
Tsujino K. [1 ]
Soejima T. [1 ]
Yoden E. [1 ]
Ichimiya Y. [1 ]
Sugimura K. [2 ]
机构
[1] Department of Radiation Oncology, Hyogo Medical Center for Adults, Akashi 673-8558
[2] Division of Radiology, Kobe University Graduate School of Medicine, Kobe
来源
Radiation Medicine | 2006年 / 24卷 / 5期
关键词
Abnormalities; Brain; Magnetic resonance imaging; Metastases; Radiation-induced;
D O I
10.1007/s11604-006-0039-9
中图分类号
学科分类号
摘要
Purpose. The purpose of this study was to evaluate white matter (WM) abnormalities induced by WBRT. Materials and methods. Twenty-four patients (11 men and 13 women; age range 38-74 years, median 60 years) who survived for more than 1 year after completion of WBRT (radiation dose range 30-40Gy, median 35Gy) at our institution between January 2000 and June 2003 were followed up with magnetic resonance (MR) scans for 11-51 months (median 19 months). We evaluated WM changes attributable to WBRT as grade 0-6 and assessed possible contributing factors by statistical analysis. Results. WM changes were found in 20 patients: Eight were assessed as grade 2, three as grade 3, and nine as grade 5. In total, 12 patients developed grade 3 or higher WM changes. Age (<60 vs ≥60 years), sex, radiation dose (≤35 vs >35 Gy), chemotherapy (with CDDP vs without CDDP), biologically effective dose (≤120 vs >120Gy1), and head width (<16.3 vs ≥16.3cm) were found not to be relevant to the incidence or severity of the WM changes. Conclusion. Long-term survivors who have undergone WBRT may have a higher incidence of WM abnormalities. © Japan Radiological Society 2006.
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页码:345 / 350
页数:5
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