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Original Research Measuring Local RF Heating in MRI: Simulating

Summary: Original Research
Measuring Local RF Heating in MRI: Simulating
Perfusion in a Perfusionless Phantom
Imran B. Akca, BS,1
Onur Ferhanoglu, MS,1
Christopher J. Yeung, PhD,2
Sevin Guney, MSc,3
T. Onur Tasci, MS,1
and Ergin Atalar, PhD1,4*
Purpose: To overcome conflicting methods of local RF heat-
ing measurements by proposing a simple technique for
predicting in vivo temperature rise by using a gel phantom
Materials and Methods: In vivo temperature measurements
are difficult to conduct reproducibly; fluid phantoms intro-
duce convection, and gel phantom lacks perfusion. In the
proposed method the local temperature rise is measured in a
gel phantom at a timepoint that the phantom temperature
would be equal to the perfused body steady-state temperature
value. The idea comes from the fact that the steady-state


Source: Atalar, Ergin - Department of Electrical and Electronics Engineering, Bilkent University


Collections: Engineering; Biology and Medicine