Abstract #3991
Adiabatic inversion recovery prepared ultrashort echo time (IR-UTE) imaging of cortical bone: effects of inversion time and undersampling
Song Gao 1 , Yanchun Zhu 1 , Huailing Zhang 2 , Shanglian Bao 1 , Xiaoguang Cheng 3 , Graeme Bydder 4 , and Jiang Du 4
1
Beijing Key Lab of Medical Physics and
Engineering, Peking University, Beijing, Beijing, China,
2
Guangdong
Medical College, Dongguan, Guangdong, China,
3
Radiology
Department, Jishuitan Hospital, Beijing, China,
4
Department
of Radiology, University of California, San Diego, CA,
United States
Suppression of signals from surrounding long T2 tissues
is important in achieving high contrast for cortical
bone in UTE MRI. In IR-UTE,the data acquisition is begun
at a delay time (TI) after an adiabatic fast passage
inversion pulse designed to allow the inverted water and
fat magnetization to approach the null point.
Appropriate selection of TI allows robust and efficient
suppression of water and fat signals. In this study, the
effect of TI on cortical bone imaging was evaluated. We
acquired the data using different degrees of
undersampling to investigate the feasibility to improve
the temporal resolution of IR-UTE.
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