Caixia Fu1, Stephan Kannengiesser2, Dominik Nickel2, Xiaodong Zhou1, Berthold Kiefer2, Dehe Weng1
1Siemens (Shenzhen) Magnetic Resonance Ltd., Shenzhen, Guangdong, China; 2MR Applications Development, Siemens AG, Healthcare Sector, Erlangen, Germany
This abstract proposes a general analytical solution for optimized fat-suppression calculation: Firstly, the magnetization expressions of fat with spoiled GRE sequence are derived from Bloch equation. And two boundary conditions including steady state of fat signal and optimized fat suppression condition are described. Secondly, a closed analytical equation for fat suppression calculation is derived Based on the magnetization expression of fat and 2 conditions, and the solution to calculate the flip angle for FatSat and TI fill time or TR fill time for SPAIR is described. Finally, In-vivo test result shows that the proposed solution is working well for both FatSat and SPAIR.