Determining electrical properties of tissue using complex magnetic resonance images

摘要

Exemplary embodiments are directed to estimating an electrical property of tissue using Magnetic Resonance (MR) images. In exemplary embodiments, complex MR images of a target tissue are obtained. An estimated value of an electrical property of the target tissue is determined based on complex values of the pixels in the complex MR images. The complex values are proportional to the product of the transmit radio frequency magnetic field and the receive RF magnetic field.

主权项

1. A method of estimating an electrical property of tissue comprising:
obtaining complex Magnetic Resonance (MR) images of a target tissue; and determining an estimated value of an electrical property of the target tissue based on complex values of the pixels in the complex MR images, the complex values being proportional to a product of the transmit RF magnetic field and the receive RF magnetic field;wherein the electrical property is a permittivity or electrical conductivity of the target tissue and wherein determining the permittivity or electrical conductivity further comprises: calculating a Laplacian of a square root of the product of the transmit and received RF field; and dividing the Laplacian by the square root of the product to generate a fractional Laplacian.