We derived analytical steady-state and transient solutions for a sphere and a SAR source with uniform and the Gaussian distribution located in an infinite medium of homogeneous properties. The results obtained analytically showed that even without taking into account blood perfusion (i) if power deposition is present only in a sphere that encloses 10 gram of human tissue and SAR10g=10W/kg the steady-state temperature rise is below 3°C for power deposition distributions as sharp as Gaussian with σ=R/3=4.33mm, (ii) the sharper the Gaussian distribution of power deposition, the higher Tmax(t=+∞) and the faster it will approach steady-state.
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