Peter W Iltis1, Matthias Heyne2, Jens Frahm3, Dirk Voit3, Arun Joseph3, Lian Atlas1. 1. Department of Kinesiology, Gordon College, Wenham, MA, USA. 2. College of Health & Rehabilitation Sciences: Sargent College, Boston University, Boston, MA, USA. 3. MRI Research Group, Max-Planck-Institute for Biophysical Chemistry, Göttingen, Germany.
Abstract
BACKGROUND: This paper describes the use of real-time magnetic resonance imaging to simultaneously obtain magnetic resonance imaging (MRI) videos in both a sagittal and coronal plane during the performance of a musical exercise in five advanced trombone players. METHODS: Dual-slice recordings were implemented in a frame-interleaved manner with 20 ms acquisitions per frame to achieve two interleaved videos at a rate of 25 frames per second. A customized MATLAB toolkit was used for the extraction of line profiles from MRI videos to quantify tongue movements associated with exercise performance from both perspectives. RESULTS: Across all subjects, the analyses revealed precise coupling of vertical movements of the dorsal tongue surface (DTS), viewed from a sagittal perspective, with reduction in the vertical and horizontal dimensions of the air channel formed between the DTS and the hard palate, viewed from a coronal perspective. The cross-correlation between these movements was very strong (mean R=0.967). CONCLUSIONS: These results demonstrate the unique utility of this dual-slice technology in describing the coordination of complex tongue movements occurring in two planes (i.e., three directions) simultaneously, lending a deeper understanding of lingual motor control during trombone performance.
BACKGROUND: This paper describes the use of real-time magnetic resonance imaging to simultaneously obtain magnetic resonance imaging (MRI) videos in both a sagittal and coronal plane during the performance of a musical exercise in five advanced trombone players. METHODS: Dual-slice recordings were implemented in a frame-interleaved manner with 20 ms acquisitions per frame to achieve two interleaved videos at a rate of 25 frames per second. A customized MATLAB toolkit was used for the extraction of line profiles from MRI videos to quantify tongue movements associated with exercise performance from both perspectives. RESULTS: Across all subjects, the analyses revealed precise coupling of vertical movements of the dorsal tongue surface (DTS), viewed from a sagittal perspective, with reduction in the vertical and horizontal dimensions of the air channel formed between the DTS and the hard palate, viewed from a coronal perspective. The cross-correlation between these movements was very strong (mean R=0.967). CONCLUSIONS: These results demonstrate the unique utility of this dual-slice technology in describing the coordination of complex tongue movements occurring in two planes (i.e., three directions) simultaneously, lending a deeper understanding of lingual motor control during trombone performance.
Entities:
Keywords:
Brass instrument players; magnetic resonance imaging (MRI); real-time MRI; tongue movements in sagittal and coronal planes
Authors: M Schumacher; Cl Schmoor; A Plog; R Schwarzwald; Ch Taschner; M Echternach; B Richter; C Spahn Journal: Neuroradiology Date: 2013-07-02 Impact factor: 2.804