The investigation of choice for vestibular schwannoma is
MRI with gadolinium contrast. It is superior to CT scan and is the gold standard for diagnosis of acoustic neuroma.Intracanalicular tumour, of even a few millimetres, can be easily diagnosed by this method.Dhingra 6e pg: 113
Contrast enhanced CT scan
Gadolinium enhanced MRI
SPECT
PET scan
Ear