Michael Burdumy1,2, Louisa Traser2,3, Bernhard Richter2, Matthias Echternach2, Jan G Korvink4, Jürgen Hennig1, Maxim Zaitsev1. 1. University Medical Center Freiburg, Department of Radiology, Medical Physics, Freiburg, Germany. 2. Institute of Musicians' Medicine, University Medical Center, Freiburg, Germany. 3. Department of Oto-Rhino-Laryngology, Head and Neck Surgery, University Medical Center, Freiburg, Germany. 4. IMTEK, University Freiburg, Lab of Simulation, Freiburg, Germany.
Abstract
PURPOSE: To accelerate dynamic imaging of the vocal tract during articulation. MATERIALS AND METHODS: Five subjects were imaged by magnetic resonance imaging (MRI) while repeating the word "Partikel" at 90 beats per minute, using both a radio-frequency-spoiled radial gradient echo sequence with golden angle projection rotation and a previously applied real-time Cartesian sequence. The acquired data were reconstructed using a CG-SENSE method and Cartesian reconstruction. The images from both methods were compared by measuring distances between anatomical landmarks that are important for resonance behavior of the vocal tract. Only commonly available hardware and software were used. RESULTS: With the presented radial method a spatial resolution of 1.8 mm at 25 frames per second could be achieved. Overall, the morphometric measurements of the vocal tract showed less deviation for the radial sequence both across repetitions and for all subjects. Fast modifications, such as complete lip closing, could be analyzed with greater fidelity using the high temporal resolution of the radial sequence. CONCLUSION: The results indicate that higher temporal resolution is a necessity to catch fast morphometric changes in the vocal tract.
PURPOSE: To accelerate dynamic imaging of the vocal tract during articulation. MATERIALS AND METHODS: Five subjects were imaged by magnetic resonance imaging (MRI) while repeating the word "Partikel" at 90 beats per minute, using both a radio-frequency-spoiled radial gradient echo sequence with golden angle projection rotation and a previously applied real-time Cartesian sequence. The acquired data were reconstructed using a CG-SENSE method and Cartesian reconstruction. The images from both methods were compared by measuring distances between anatomical landmarks that are important for resonance behavior of the vocal tract. Only commonly available hardware and software were used. RESULTS: With the presented radial method a spatial resolution of 1.8 mm at 25 frames per second could be achieved. Overall, the morphometric measurements of the vocal tract showed less deviation for the radial sequence both across repetitions and for all subjects. Fast modifications, such as complete lip closing, could be analyzed with greater fidelity using the high temporal resolution of the radial sequence. CONCLUSION: The results indicate that higher temporal resolution is a necessity to catch fast morphometric changes in the vocal tract.
Authors: Xue Feng; Silvia S Blemker; Josh Inouye; Catherine M Pelland; Li Zhao; Craig H Meyer Journal: Magn Reson Med Date: 2018-03-05 Impact factor: 4.668
Authors: Johannes Fischer; Ali Caglar Özen; Serhat Ilbey; Louisa Traser; Matthias Echternach; Bernhard Richter; Michael Bock Journal: MAGMA Date: 2021-09-20 Impact factor: 2.310
Authors: Andreia C Freitas; Marzena Wylezinska; Malcolm J Birch; Steffen E Petersen; Marc E Miquel Journal: PLoS One Date: 2016-04-13 Impact factor: 3.240