Yoshitaka Bito1, Toru Shirai1, Satoshi Hirata1, Yo Taniguchi1, Koji Hirata1, Yosuke Otake1, Yoshihisa Soutome1, Hisaaki Ochi1, Toshihiko Ebisu2, Yuko Kawai3, Masahiro Umeda3, Toshihiro Higuchi4, Chuzo Tanaka4
1Central Research Laboratory, Hitachi, Ltd., Kokubunji-shi, Tokyo, Japan; 2Neurosurgery, Nantan General Hospital, Kyoto, Japan; 3Medical Informatics, Meiji University of Integrative Medicine, Kyoto, Japan; 4Neurosurgery, Meiji University of Integrative Medicine, Kyoto, Japan
A parallel line-scan echo-planar spectroscopic imaging (PLSEPSI) technique has been developed to increase the number of lines, spectral resolution, and scan speed.@The technique uses simultaneous acquisition of multiple lines by a pair of parallel slice excitations and discrimination of the lines at crossing slices by using sensitivity maps of multiple receive coils. Interestingly, the signal-to-noise ratio (SNR) of PLSEPSI improves under certain conditions, and this SNR improvement never occur in the case of conventional parallel imaging with reduced phase encoding. Acquisition of spectroscopic images in half the measurement time is demonstrated using a 2-channel receive array coil by 2-line acquisition of PLSEPSI.