Correlation analysis between the complex electrical permittivity and relaxation time of tissue mimicking phantoms in 7 t mri

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SUMMARY

    TI TR S=ρ 1 - 2e- T1 + e- T1 where S is the acquired MRI signal, ρ is the proton density, TI is the inversion time, TR is the repetition time, and T1 is the longitudinal relaxation time. The Debye equations represent the complex permittivity ε*, as follows: ε*=ε′ + jε′′ where the real part ε` is the electrical permittivity, and the imaginary part ε" is commonly referred to as the loss index, which is related to the electrical conductivity as follows: σ=wε0 ε′′ where w is the frequency and ε0 is the permittivity of free space. With these definitions, the . . .

     

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