SYSTEMS AND METHODS FOR DIFFUSION-WEIGHTED MULTI-SPECTRAL MAGNETIC RESONANCE IMAGING

摘要

Systems and methods for performing diffusion-weighted muiti-spectral imaging ("MS!") with a magnetic resonance imaging ("MRI") system are provided, Diffusion- weighted images can thus be acquired from a subject in which a metallic object, such as an implant or other device, is present. In general, a two-dimensional or three-dimensional diffusion-weighted PROPELLER acquisition is performed to acquire data from multiple different spectral bins. Images from the spectral bins are reconstructed and combined to form diffusion-weighted composite images. Non-CPMG phase-cycling and split-blade PROPELLER techniques are combined with PROPELLER MSI metal artifact mitigation principles to this end.