Felipe Godinez1,2, Greig Scott3, Joseph V Hajnal1,2, and Shaihan J Malik1,2
1Biomedical Engineering Department, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom, 2Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom, 3Department of Electrical Engineering, Stanford, Stanford, CA, United States
1Biomedical Engineering Department, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom, 2Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom, 3Department of Electrical Engineering, Stanford, Stanford, CA, United States
Heating in cardiac guidewires in interventional MRI can be mitigated by using a local Tx coils instead of whole-body coils. Whole-body and local parallel-transmit coils were used to create maximum coupling scenarios to demonstrate this difference, which we have observed in prior animal tests.
Figure 1: Anthropomorphic gel phantom filled with poly acrylic acid gel. The gel thickness was 133mm.
Figure 3: Temperature profile at the guidewire tip for the body and local coil during a high power sequence.
