SYSTEMS AND METHODS FOR ESTIMATING COMPLEX B1+ FIELDS OF TRANSMIT COILS OF A MAGNETIC RESONANCE IMAGING (MRI) SYSTEM

摘要

Systems and methods for estimating complex transmit field B₁⁺ a transmit coil of a magnetic resonance imaging (MRI) system in both k-space and image domains are described herein. Estimating complex RF field B₁⁺ in the k-space domain includes acquiring complex data in a k-space domain, estimating a complex B₁⁺ map in the k-space domain of a transmit coil and storing the complex B₁⁺ map. The complex B₁⁺ map can be estimated based on the complex images. Estimating complex transmit field B₁⁺ in the image domain includes acquiring at least two complex images in a k-space domain, transforming the complex images into an image domain, estimating a complex B₁⁺ map in the image domain of a transmit coil, and storing the complex B₁⁺ map.