Table 1.
Clinical characteristics and treatment of patients
| Patient characteristics | |
| Total no. of patients | 49 |
| Gender (m:f) | 28 : 21 |
| Recurrent iAN | 4 (8.2%) |
| Age (years)a | 54 (20;77) |
| Tumor volume (cm3)a | 0.24 (0.1;0.68) |
| Mean follow-up (months)a | 65 (4;239) |
| Initial Symptoms and Signs | |
| Hearing loss | 6 (12.2%) |
| Hearing disturbance (%) | 40 (81.6%) |
| - Serviceable | 29 (59.2%) |
| - Non-serviceable | 11 (22.4%) |
| Vertigo (%) | 17 (34.7%) |
| Imbalance (%) | 10 (20.4%) |
| Tinnitus (%) | 22 (44.9%) |
| CN VII impairment (%) | 4 (8.2%) |
| Duration of symptoms | |
| Appearance of symptoms leading to SRS months)a | 42.3 (4;182) |
| First MRI (diagnosis) to SRS (months)a | 19.9 (2;153) |
| - Group Aa | 34 (9;134) |
| - Group Ba | 4 (2;6) |
| Radiation parameters | |
| LINAC (1993–2012) | 38 |
| CK (2013–2015) | 11 |
| Marginal dose (Gy)a | 12.6 (11;14) |
| Dose prescription, isodose (%)a | 75 (47;86) |
| Coverage (%) LINACa | 97.8 (91.1;100) |
| Coverage (%) CKa | 98.7 (94.8;100) |
If marked with adata is given as mean. Range is given in brackets