Systems and methods for multifrequency magnetic resonance electrical impedance tomography

Abstract

Disclosed herein are systems and methods for Magnetic Resonance Electrical Impedance Tomography (MREIT). A system for imaging biological tissue comprises a controller, a multifrequency arbitrary-waveform constant-current source, a Howland constant-current source, and a digital-to-analog converter. The controller is configured to generate a multifrequency magnetic resonance electrical impedance tomography sequence. The generation comprises producing, by the controller, a digital sequence, and converting, by the digital-to-analog converter, the digital sequence to an analog sequence. The generation may further comprise: producing, by the Howland constant-current source, a standard magnetic resonance electrical impedance tomography sequence based on the analog sequence; producing, by the multifrequency arbitrary-waveform constant-current source, a sine wave at one or more predetermined frequencies; and modulating the standard magnetic resonance electrical impedance tomography sequence with the sine wave. A method of measuring an electrical property of a biological tissue comprises imaging the biological tissue using this system.

Dependencies are inferred from the claim text.