Improved Sampling Density Correction for PROPELLER MRI
Pipe J, Kunesh C
St. Joseph's Hospital
Non-uniform collection of data for PROPELLER MRI poses the need for a sampling density correction algorithm. The previous method consisted of a double convolution method that left artifacts in the final image, most commonly seen as a ringing effect. This new algorithm makes use of the regular geometries associated with PROPELLER scans and results in more accurate sampling density correction and lessening of associated artifacts.