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Abstract #2354

Remember PSIF? a 2-Second Imaging Method for T2 Contrast at 7T

Yiu-Cho Chung1, Yanjie Zhu1, Xin Liu1, Chao Zou1

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

T2 weighted imaging at 7T using TSE is challenged by B1 transmit field inhomogeneity and SAR limitation. We propose to use PSIF instead of TSE at 7T. PSIF uses low flip angle and is less sensitive to RF system imperfections. The high magnetic field offers the SNR needed in PSIF. Also, 2DPSIF is fast (2sec per image) due to short TR used. In 2DPSIF, the SNR of white matter is about 30, and the CNR between grey matter and white matter is about 18, sufficiently high for diagnostic purposes. 2DPSIF is a good alternative to T2 weighted TSE at 7T.