The safety of treating people who have intracranial titanium aneurysm clips with TMS has received little attention.
We suspended a titanium clip and other metal comparators on 1.5 m of sewing cotton and fired a TMS coil placed less than 1 cm away, at 100% machine output. Highly magnetic objects moved at least 25 cm, while the titanium clip did not move.
We placed the clip and a highly magnetic comparator, at first, in the flesh of a cantaloupe, and later, in a cold hard-boiled egg. After 75 trains of 10H z, 4 second trains, at 100% of machine output, in neither case could we perceive any movement of these objects.
This backyard experiment suggests we may have been worrying unduly about the danger of disturbing intracranial titanium clips with TMS, but sophisticated studies are indicated.
History
Commissioning body
YouTube
Department/School
Tasmanian School of Medicine
Publisher
YouTube
Place of publication
Australia
Repository Status
Restricted
Socio-economic Objectives
Treatment of human diseases and conditions; Mental health