Reference-Free Detection of RF Unsafe Conditions and Countermeasures for Implantable MR-Conditional Devices

Keywords

absolute acquisition adjusted aiming allowed amplitude amplitudes assess basic became become body bottom cellulose channel channels coefficients coil coils complex concept conditional conditions conductivity configuration configurations connections connector constant contains correlation countermeasures coupled coupling database detect detection deviation deviations device devices difficult driven eight electrode electrodes element ethyl evaluated even experiment extended feasibility feed finally findings five future guided heat heating helpful identify implant implantable implants important improved in vivo induced intervals interventions largest lead leads length like linear liters load loading magnitude making measured monitored monitoring monitors moving necessary needs norm normalized optic pacemaker pairs parallel patient peter phantom placed placement position potential potentially prevent proposed pseudo ranging realistic reduced reducing reduction represent resonant reversal reversed safety saline scanner shape side situations strongest studies subjects subsequently sufficient suggests suitable support symmetry system table technical technology temp temperature thighs torso transmission transmit tube typical unnecessary unsafe varies various velocity volunteer volunteers waveform weaker