Research

Vocal Tract Visualization logo
Research technologies

Ultrasound

Magnetic Resonance Imaging (MRI)

Electropalatography (EPG)

Various research areas

Modelling the tongue

Tongue Segmentation

Swallowing

Fun Movies

Glossectomy Study

Ultrasound
Ultra high-frequency sound waves are used to create movies of planar tongue motion. The 2D planar motion can be reconstructed into 3D surface motion.Click to download a Guide to Analyzing Tongue Motion from Ultrasound Images.Our applications of this technology include:
‌ AHATS_profile

 

Head and Transducer Support (HATS) System

us1 

Mid-sagittal Ultrasound image of the tongue(Image of 'I')

results_image1  Edge detection of tongue contours using EdgeTrak  3d visualization image

3D Reconstruction of the tongue surface from ultrasound.(Image of 'l')

 us2

Ultrasound image of the vocal folds while breathing

mid-right ‌

Visualizes and compares multiple contours using SURFACES.

Magnetic Resonance Imaging (MRI)
Vocal tract images are made in multiple planes during sustained speech sounds. Tagged Cine-MRI (tMRI) allows tracking of tissue points in oral structures.
 mri-r Subject saying /r/  VJPia_mid_nt_miscr

Subject saying /i/

MRI movies

Tagged Cine-MRI (tMRI) -Planar

Tagged Cine-MRI (tMRI) -MICSR

Electropalatography (EPG)

Acrylic palates, custom made to fit each subject's palate, record tongue-palate contact in real time.
 epg_data_365 Electropalatography image
EPG pictures and movies