Participant timeline
| Visit number | −1 | 0 | T | F1 | F2 | F3 | F4 |
| Activity | Prestudy | Baseline/ randomisation <6 months from diagnosis | Treatment <2 months post randomisation | Follow-up 12 Months | Follow-up 24 months | Follow-up 36 months | Follow-up 48 months |
| Enrolment | |||||||
| Eligibility screen | X | ||||||
| Informed consent | X | ||||||
| Allocation | X | ||||||
| Interventions | |||||||
| Gamma knife radiosurgery | X Intervention group only | ||||||
| Assessments | |||||||
| MRI | X | X | X | X | X | ||
| Tumour volumetric measurements | X | X | X | X | X | ||
| Clinical examinations | X | X | X | X | X | ||
| Audiometry | X | X | X | X | X | ||
| Dynamic posturography | X | X | X | X | X | ||
| Video-nystagmometry | X | X | X | X | X | ||
| Penn acoustic neuroma qualify-of-life questionnaire | X | X | X | X | X | ||
| EQ-5D-3L Questionnaire | X | X | X | X | X | ||
| Health economy/ working status | X | X | X | X | X | ||
EQ-5D-3L, EuroQol 5 Dimension 3 Level Response.