Systems and methods for spatial gradient-based electrical property properties tomography using magnetic resonance imaging

摘要

Systems and methods for producing an image of the electrical properties of an object using magnetic resonance imaging (“MRI”) are provided. The electrical properties are determined based on estimated gradient values of the electrical properties of the object. For instance, electrical property maps are reconstructed using a spatial integration on gradient values that are estimated from the magnitude and relative phase values derived from measurements of multiple transmit and receive B₁fields. Specific absorption rate (“SAR”) maps can also be produced based on the estimated electrical properties.