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We present a review outlining the basic mechanism, background, recent technical developments, and clinical applications of aqueous dielectric padding in the field of MRI. Originally meant to be a temporary solution, it has gained traction as an effective method for correcting B1+ inhomogeneities due to the unique properties of the calcium titanate and barium titanate perovskites used. Aqueous dielectric...
Purpose
Ultra‐high field MR imaging lacks B1+ inhomogeneity due to shorter RF wavelengths used at higher field strengths compared to human anatomy. CEST techniques tend to be highly susceptible to B1+ inhomogeneities due to a high and uniform B1+ field being necessary to create the endogenous contrast. High‐permittivity dielectric pads have seen increasing usage in MR imaging due to their ability...
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