We explore the feasibility of noninvasive temperature measurement around deep brain stimulation (DBS) leads using magnetic resonance fingerprinting (MRF) by leveraging 1) the dependency of T1 on temperature; 2) MRF’s efficient T1 and B0 mapping. We conducted a T1 and temperature calibration experiment and a lead calorimetry experiment on bovine muscle. The effects of B0 inhomogeneity and temperature profiles of different regions of interest (ROI) were investigated. The calibration showed a strong correlation between temperature and T1 (R2>0.98). We observed a maximum change of 10.2 oC near leads (~1mm away) during calorimetry experiments, validated by fluoroptic probes.
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