Table 4. .

Breakdown of incidents by subcategory for 6 monthly periods between 2015 and 2017

Sub category	Event reports per collection period						No of event reports	Incidence rate
	Jan–Jun 15	Jul–Dec 15	Jan–Jun 16	Jul–Dec 16	Jan–Jun 17	Jul–Dec 17		% per exam(1,339,502)	% per event report
Projectile	5	3	4	4	10	6	32	0.0024	4.75
Equipment labelling	2	1	1	0	1	0	5	0.00037	0.74
Unauthorised access	0	1	0	0	1	2	4	0.00030	0.6
Burn	2	0	2	2	2	2	10	0.00075	1.48
PNS	0	0	0	0	0	0	0	0	0
Noise complaint	0	2	2	2	0	0	6	0.00045	0.89
Unable to confirm safety	14	5	7	20	12	19	77	0.00570	11.4
Implant scanned outside of policy	1	0	0	1	0	0	2	0.00015	0.3
Unexpected implant or foreign body	4	10	10	15	16	13	68	0.0051	10.1
Implant/device-related Issue	0	4	5	7	4	0	20	0.0015	2.97
Contraindicated referral	21	15	28	45	62	45	216	0.016	32
Faulty/damaged coils	0	0	0	0	0	0	0	0	0
Faulty oxygen monitor	0	0	0	0	0	0	0	0	0
Quench	0	0	0	2	0	0	2	0.00015	0.3
Other	4	2	3	3	6	5	23	0.0017	3.41
Adverse contrast reaction	20	14	29	21	22	18	124	0.0093	18.4
Extravasation	5	12	5	7	7	17	53	0.0040	7.86
Other drug-related Issue	5	4	4	9	6	4	32	0.0024	4.75
Overall totals	83	73	100	138	149	131	674	0.05	100

PNS, peripheral nerve stimulation.

The bold rows relate to the top ranking incidents as discussed in the paper.