METHOD OF PRODUCING A COMPACT CONTROL MODULE FOR A HIGH-FREQUENCY ANTENNA FOR A NUCLEAR MAGNETIC RESONANCE IMAGING DEVICE

摘要

The aim of the present invention is to provide a method of producing a compact control module for a high-frequency antenna for a magnetic resonance imaging device comprising M control elements and N radiating elements, said control module being represented by a control matrix P, P being an approximate matrix of a control matrix P used to control the N radiating elements using the M control elements; said method comprising: a step of dividing the control matrix P into two matrices H x L; the first matrix L, of dimensions MxM, being capable of transforming in amplitude and in phase a plurality of M signals Vm emitted by said plurality M of control elements into M signals V; the second matrix H, of dimensions NxM, receiving said M signals V as inputs; a step of producing said matrix H with a number of stages that is lower than the number of stages required to implement control matrix P, said stages being implemented by coupling means (17), phase displacement means (18) and permutation means (19); and a step of implementing said matrix L using software means from the implementation of matrix H determined during the previous step.