Patients with deep brain stimulation (DBS) implants can significantly benefit from MRI, however the interaction between MRI electric fields and DBS leads induces RF currents in the leads that can cause tissue heating and image artifacts. Here we show that modifying the extracranial trajectory of a DBS lead implanted into a cadaver brain significantly reduces both heating in the tissue and the image artifact around electrode contacts during MRI at 3T. Electromagnetic simulations confirm that trajectory modification can reduce induced currents in the lead, which in turn reduces the SAR amplification and distortion of B1 fields around the electrodes.
How to access this content:
For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.
After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.
After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.
Keywords