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Table 1 Clinical characteristics and treatment of patients

From: Long-term follow-up after stereotactic radiosurgery of intracanalicular acoustic neurinoma

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)
  1. If marked with adata is given as mean. Range is given in brackets