Glen Morrell1,2, Matthias Schabel2
1Radiology Department, University of Utah Health Sciences Center, Salt Lake City, UT, USA; 2Utah Center for Advanced Imaging Research, University of Utah, Salt Lake City, UT, USA
Error analysis of four methods of flip angle mapping was performed by explicit calculation of the probability density functions of the flip angle estimates given corruption of the measured MR signals by Gaussian white noise. The methods investigated were double angle gradient recalled echo, double angle spin echo, actual flip angle imaging, and a phase sensitive technique. The phase sensitive technique is shown to be superior to other methods, with lower mean bias and lower variance of the flip angle estimate.