[Time-dependence evaluation of the primary visual cortex by 1H MR-spectroscopy using a stimulation control system].
Proton magnetic resonance spectroscopy ((1)H MRS) is used to evaluate tumors and their remaining function under the assumption that event-related inspection and a method of data collection dependent on time are difficult. Therefore, this study examined the possibility that time depended on in MRS with a visual cortex. We conducted experiments using the following stimulations: REST: eyes are in a closed state,


METHODS
eyes are in an open state, and Continuous: consecutive stimulation and time dependence in the visual cortex. We enabled dependence in time by collecting data with a system that controlled stimulation and experimented on stimulation for a short time using this system. The results showed that no significant difference in metabolites was seen in the REST, CONTROL, and Consecutive stimulations. However, a significant difference was seen in Cr and NAA with time-dependent stimulation. Therefore, we considered functional magnetic resonance spectroscopy (fMRS) useful because time-dependent stimulation showed a meaningful difference with REST.
Maeno
Masato
M
Medical Imaging Center, National Rehabilitation Center for Persons With Disabilities.
Ishida
Tomohiro
T
Ishihara
Shinya
S
Sawada
Keisuke
K
Kawasaki
Akihito
A
Yanasima
Ryoji
R
Koinuma
Takeshi
T
Magatani
Kazushige
K
Yanasima
Kenji
K
D000328:Adult; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D008297:Male; D008875:Middle Aged; D010775:Photic Stimulation / Q000379:methods*; D017785:Photons; D013995:Time; D014793:Visual Cortex / Q000502:physiology*