1Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Key Laboratory for MRI, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, China
At 3T, conventional free breathing T2 weighted imaging in the abdomen by HASTE is limited by SAR constraint and B1 inhomogeneity. This work shows that PSIF offers good T2 contrast in abdomen under 3T with a flip angle of around 20o C 30o, drastically reducing SAR and is more robust than HASTE. For 2D PSIF in healthy volunteers, the SNR of liver is around 17 and spleen-liver CNR is around 18 and is sufficient for diagnostic purpose. The short TR in PSIF shortens the scan time to within 1s/slice, and eliminates the need for breathholding or respiratory triggering.