Physiological motion induces signal loss in diffusion-weighted imaging of the liver even when respiratory triggering is employed. Cardiac motion mostly affects the left liver lobe resulting in an inhomogeneous signal appearance and overestimation of the apparent diffusion coefficient (ADC). Spatial scaling is an algorithm that handles the intrinsic weighting of signal by rejecting bad acquisitions and voxels with subsequent calculation of a spatially dependent scaling factor for the final averaging. The present work shows that by adding such a spatial scaling postprocessing step, liver signal homogeneity can be increased, and overestimation of the ADC can be reduced.
How to access this content:
For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.
After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.
After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.
Keywords