Ticept: Wideband Electrical Properties Tomography by Tissue Composition Assessment With Quantitative  1$$ {}^1 $$H 23$$ {}^{23} $$Na 39$$ {}^{39} $$K Multinuclear MRI

We presented the feasibility of estimating dielectric properties over a wide frequency band with quantitative MRI, leading to a new method: <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:semantics> <mml:mrow><mml:msup><mml:mo> </mml:mo> <mml:mrow><mml:mn>1</mml:mn></mml:mrow> </mml:msup> </mml:mrow> <mml:annotation>$$ {}^1 $$</mml:annotation></mml:semantics> </mml:math> H <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:semantics> <mml:mrow><mml:msup><mml:mo> </mml:mo> <mml:mrow><mml:mn>23</mml:mn></mml:mrow> </mml:msup> </mml:mrow> <mml:annotation>$$ {}^{23} $$</mml:annotation></mml:semantics> </mml:math> Na <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:semantics> <mml:mrow><mml:msup><mml:mo> </mml:mo> <mml:mrow><mml:mn>39</mml:mn></mml:mrow> </mml:msup> </mml:mrow> <mml:annotation>$$ {}^{39} $$</mml:annotation></mml:semantics> </mml:math> K-TiCEPT. A discrepancy can be observed in the 50-200 MHz range, but the data aligns with literature from 200-600 MHz. These results show substantial intersubject differences in effective conductivity (29%), supporting the need for an accurate method to provide in vivo dielectric tissue properties.