Table 1.

Surveillance imaging protocols for the conservative management of vestibular schwannoma

	CPH	BHM	NHNN		KCH
			Intrameatal	Extrameatal	Intrameatal	Extrameatal
Total scans in 15-year period	8	6	8	9	7	8
Duration of surveillance	14 years	Lifelong	Lifelong	Lifelong	Lifelong	Lifelong
Index scan
6 months		MRI		MRI		MRI
1 year	MRI	MRI	MRI	MRI	MRI	MRI
2 years	MRI	MRI	MRI	MRI	MRI	MRI
3 years	MRI		MRI	MRI	MRI	MRI
4 years	MRI	MRI
5 years	MRI		MRI	MRI	MRI	MRI
6 years
7 years	MRI		MRI	MRI	MRI	MRI
8 years
9 years	MRI	MRI	MRI	MRI
10 years					MRI	MRI
11 years
12 years			MRI	MRI
13 years
14 years	MRI	MRI
15 years			MRI	MRI	MRI	MRI
Ongoing	N/A	Every 5 years	Every 5 years	Every 5 years	Every 5 years	Every 5 years

CPH = Copenhagen; BHM = Birmingham; NHNN = National Hospital for Neurology and Neurosurgery, London; KCH = King’s College Hospital, London; MRI = magnetic resonance imaging