Magseed

Endomagnetics Ltd

Radiological image marker, implantable

A Magseed® marker cannot currently be placed under MRI guidance because the deployment needle is made of stainless steel. However, it is fine for a patient with a Magseed marker implanted to have an MRI (1.5T & 3.0T) without causing any heating or movement of the seed.

Just like any clip marker, it will cause some level of void artefact but this will vary depending on the sequence you use. A 2-4cm artefact is common. However, as this is a lesion localization device and not a biopsy site marker, it’s quite rare that a patient would need an MRI whilst the Magseed is in place.