title: [4D-MRI using the synchronized sampling method (SSM)].
abstract: 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.
authors.affiliation: Advanced Telecommunications Research Institute International.
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Shimada
authors.forename: Ichirou
authors.initials: I
authors.lastname: Fujimoto
authors.forename: Hironori
authors.initials: H
authors.lastname: Takemoto
authors.forename: Sayoko
authors.initials: S
authors.lastname: Takano
authors.forename: Shinobu
authors.initials: S
authors.lastname: Masaki
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Honda
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Takeo
mesh_terms: D004562:Electrocardiography; D005260:Female; D006801:Humans; D007089:Image Enhancement; D021621:Imaging, Three-Dimensional; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male