Method for processing phase information, particularly for susceptibility weighted imaging, obtained from PROPELLER measurements

摘要

The present invention relates to a method for processing phase information, particularly for susceptibility weighted imaging, obtained from PROPELLER measurements, comprising the steps: acquisition (1) of MR signals using a PROPELLER acquisition scheme, wherein MR signals are acquired for a plurality of k-space blades (20), wherein each k-space blade (20) comprises a central region (22) of the k-space and wherein adjacent k-space blades (20) are rotated in k-space with respect to each other about said central region (22) by a pre-defined angle (A), and applying a post-processing step (8) to the MR signals which alters the phase information of the MR signals. According to the invention - before applying said post-processing step (8) to said MR signals - a phase-processing step (3, 4, 5, 6, 7) is applied to the MR signals of each k-space blade (20), wherein said phase-processing step (3, 4, 5, 6, 7) utilizes the unaltered phase information of the MR signals of the k-space blades (20), particularly for enhancing a contrast in an MR image reconstructed from the MR signals. Therefore, applying the present invention, phase information acquired by a PROPELLER sequence can be preserved and utilized for various purposes (e.g. susceptibility weighted MRI, phase contrast MRI, etc).