SINGLE-ECHO IMAGING WITH NONLINEAR MAGNETIC GRADIENTS

摘要

Efficient encoding of signals in an MRI image is achieved through a combination of parallel receiver coils, and nonlinear gradient encoding that varies dynamically in such a manner as to impose a unique phase/frequency time varying signal on each pixel in the field of view. Any redundancies are designed such that they are easily resolved by the receiver coil sensitivity profiles. Since each voxel has an essentially identifiable complex temporal signal, spatial localization is easily achieved with only a single echo acquisition.

主权项

1. A method for increasing imaging speeds in MRI by using nonlinear magnetic gradient fields combined with parallel receiver technology and dynamic modulation of the nonlinear magnetic gradient fields in such a manner that a unique signature is imposed on each region within the field of view such that spatial localization is achieved, comprising:
generating nonlinear magnetic gradient fields for spatial encoding of nuclear spin magnetization is achieved; applying pulse sequences composed of the nonlinear magnetic gradient fields and radio frequency fields to a targeted subject to generate magnetic resonance signals; detecting the generated magnetic resonance signals; storing the generated magnetic resonance signals; and processing the generated magnetic resonance signals to reconstruct spectra and images of the object.