Methods and apparatus for accurate characterization of signal coil receiver sensitivity in magnetic resonance imaging (MRI)

摘要

A method for estimating receiver coil sensitivity in a magnetic resonance (MR) system having a plurality of coils in a coil array including a reference coil, including steps of estimating receiver coil sensitivity in each of the plurality of coils in the coil array of the MR system using one of an electromagnetic field method, a bias field method, and a uniform transmit field method. Each of the plurality of coils in the coil array includes one or more of a surface coil, a volume coil, a set of coil arrays, or an antenna element of a coil array. The method further includes steps of obtaining a reference image using the reference coil; generating a measured sensitivity map using the reference coil; and for each of the plurality of coils of the coil array, calculating a receiver coil sensitivity map.