[4D-MRI using the synchronized sampling method (SSM)].
A synchronized sampling method (SSM) was developed for the study of voluntary movements by combining the electrocardiographic (ECG) gating method with an external triggering device, and four-dimensional magnetic resonance imaging (4D-MRI) at a rate of 30 frames per second was accomplished by volumetric imaging with the SSM. This method was first applied to the motion imaging of articulatory organs during repetitions of a Japanese five-vowel sequence, and the dynamic change in vocal tract area function was demonstrated with sufficient temporal resolution. This paper describes the methodology, applicability, and limitations of 4D-MRI with the SSM.
Shimada
Yasuhiro
Y
Advanced Telecommunications Research Institute International.
Fujimoto
Ichirou
I
Takemoto
Hironori
H
Takano
Sayoko
S
Masaki
Shinobu
S
Honda
Kiyoshi
K
Takeo
Kazuhiro
K
D004562:Electrocardiography; D005260:Female; D006801:Humans; D007089:Image Enhancement; D021621:Imaging, Three-Dimensional; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male