Tomoyuki Okuaki1, Yukihisa Takayama2, Akihiko Nishie3, Makoto Obara4, Tetsuo Ogino4, Hiroshi Honda3, Marc Van Cauteren1
1Philips Healthcare Asia Pacific, Minato-ku, Tokyo, Japan; 2Department of Molecular Imaging and Diagnosis, Kyushu University, Graduate School of Medical Science, Fukuoka, Japan; 3Department of clinical Radiology, Kyushu University, Graduate School of Medical Sciences, Fukuoka, Japan; 4Philips Electronics Japan, Minato-ku, Tokyo, Japan
An adiabatic locking pulse is applied to obtain homogeneous spin locking and compared with block pulse locking. Visual evaluation was done to assess the homogeneous of the T1rho maps and T1rho values obtained by both methods were measured. The visual evaluation of T1rho maps obtained by adiabatic locking was scored higher (p value<0.05) and T1rho values obtained by adiabatic were significantly different between normal and Child-Pugh BorC(Kruskal-Wallis method, p value<0.05). Adiabatic spin locking method provided homogeneous and artifact free liver T1rho maps at 3T. This is expected to be useful for robust evaluation of liver function using T1rho.