Table 1
Baseline patient characteristics
| Characteristic | Number of patients | |
|---|---|---|
| Total number of lesions | 111 | |
| Sex | Male | 40 |
| Female | 63 | |
| Age (mean) | 51 | |
| Histopathological diagnosis | Arteriovenous malformation | 34 |
| Meningioma | 38 | |
| Metastasis | 16 | |
| Neuroma | 16 | |
| Cavernous angioma | 3 | |
| Anaplastic astrocytoma | 2 | |
| Anaplastic Oligoastrocytoma | 2 | |
| Lesion location | Ponto-cerebellar angle | 24 |
| Cerebellum | 7 | |
| Parietal lobe | 16 | |
| Frontal lobe | 17 | |
| Subcortical nucleus/hippocampus | 12 | |
| Convexity | 2 | |
| Petroclival | 1 | |
| Temporal lobe | 8 | |
| Falx | 13 | |
| Tentorium | 3 | |
| Occipital lobe | 4 | |
| More than one SRS treatment | 8 | |
| Mean V12 | 6.3 cm3 |
MRI scans performed after treatment showing delineation of area with decreasing edema. (A) 6 months; (B) 12 months; (C) 18 months; (D) 24 months.
The Frankfurt Line (blue line) and the Frankfurt modified line (FML; red line).
The largest volume of edema was observed at 6 months (mean 7.2 months, S.D. 1.2 months) after radiosurgery and decreased thereafter.