Fast Free-Breathing 3D T1ρ Abdominal Imaging Using an Efficient Diamond Radial Sampling Strategy at 3T

An efficient diamond radial sampling strategy was proposed for free-breathing 3D T1ρ abdominal imaging at 3T. The phantom experiment shows that diamond radial sampling provides T1ρ measurement values comparable to that of 3D Cartesian and radial stack-of-stars sampling. In-vivo volunteer studies illustrate that diamond radial sampling is superior to Cartesian sampling, where image quality is significantly compromised by breathing motion artifacts. In addition, scan time can be drastically reduced using the fast MAPSS method. This work demonstrates the feasibility of quantitative free-breathing 3D T1ρ imaging with diamond radial sampling in the abdomen.