Keywords: Large Animals, Nonhuman Primates, Safety, Swine, thermoregulation, temperature curves
Motivation:
Radiofrequency used during MRI exams heat tissue. The temperature increase is unknown and the thermoregulatory responses still need to be analyzed.
Goal(s): To analyse the temperatures within the thresholds. Are any changes seen. Is the biological simulation replicable in living swine.
Approach: SAR levels in the 2.mode were planned in the swine as an animal model.
Results: The thermoregulatory model (temperature going into a plateau) is only one pattern next to 3 other patterns (linear, parabolic, and sinusoidal). So these will change the calculations of simulations for temperatures in humans receiving MRI exams.
Impact: Radiofrequency induced temperature changes in MRI exams need to be reevaluated as new thermoregulatory patterns are observed. Increased internal temperatures are subconsciously discerned causing thermoregulation to avoid tissue damage.
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