Satoru Adachi1, Toshihiro Ozeki2, Shinya Handa1, Ryosuke Shigeki1, Katsumi Kose1, Tomoyuki Haishi3
1Institute of Applied Physics, University of Tsukuba, Tsukuba, Ibaraki, Japan; 2Sapporo, Hokkaido University of Education, Sapporo, Hokkaido, Japan; 3MRTechnology, Tsukuba, Ibaraki, Japan
A compact MRI system for a low temperature (-5 degree) room was developed for several useful applications. The magnet, 2nd order shim coil set, and gradient probe were installed in the low temperature (LT) room and the MRI console was installed in a usual temperature operation room next to the LT room. The control lines for transmitter, receiver, and gradient coils were connected through a hole opened in the wall between the LT room and the operation room. Magnetic field inhomogeneity measured using a geometric phantom showed an increase of inhomogeneity with decreasing temperature. However, it was concluded that this system can be used even at -5 degree using the 2nd order shim-coil set.