Ian Stavness

OPAL


The OPAL project is focused on MR imaging and computer modeling of oral, pharyngeal, and laryngeal anatomy. Research activities are directed towards analysis of upper-airway dysfunctions, such as swallowing disorders (dysphagia), Obstructive Sleep Apnea (OSA) and computer-aided reconstructive head & neck surger. This work invovled advanced 3D biomechanical simulation with the ArtiSynth simulation toolkit.

We work closely with clinical collaborators across North America and Internationally. My group has recently developed a tracker tool for video fluoroscopy data that is being actively used by a number of clinical research groups.

Publications

Raj Natarajan, Ian Stavness, and William Pearson. Semi-automatic tracking of hyolaryngeal coordinates in VF swallowing studies. Computer Methods in Biomechanics and Biomedical Engineering: Imaging & Visualization, (in press):1–11, 2015.
Negar Harandi, Ian Stavness, Jonghye Woo, et al. Subject-specific biomechanical modelling of the oropharynx. Computer Methods in Biomechanics and Biomedical Engineering: Imaging & Visualization, (in press):1–11, 2015.
Negar Harandi, Ian Stavness, Jonghye Woo, et al. . Comput Methods Biome: Imag & Vis, in press:1–12, 2015.
Ian Stavness, JE Lloyd, and SS Fels. Automatic Prediction of Tongue Muscle Activations Using a Finite Element Model. Journal of Biomechanics, 45(16):2841-2848, 2012. [ PDF ]
Ian Stavness, MA Nazari, P Perrier, D Demolin, and Y Payan. A Biomechanical Modeling Study of the Effects of the Orbicularis Oris Muscle and Jaw Posture. Journal of Speech, Language, and Hearing Research, 56:878–890, 2013.
Ian Stavness, B Gick, D Derrick, and SS Fels. Biomechanical Modeling of English /r/ Variants. Journal of the Acoustical Society of America Express Letters, 131(5):355-360, 2012. [ PDF ]
Ian Stavness, JE Lloyd, Y Payan, and SS Fels. Towards Speech Articulation Simulation with a Dynamic Coupled Face-Jaw-Tongue Model. International Symposium on Speech Production (ISSP '11), Poster, June 2011.
Ian Stavness, JE Lloyd, Y Payan, and SS Fels. Dynamic Hard-Soft Tissue Models for Orofacial Biomechanics. ACM SIGGRAPH Talks, July 2010.
Ian Stavness, JE Lloyd, Y Payan, and SS Fels. Coupled Hard-Soft Tissue Simulation with Contact and Constraints Applied to Jaw-Tongue-Hyoid Dynamics. International Journal for Numerical Methods in Biomedical Engineering, 27:367-390, 2011. [ PDF ]
Ian Stavness, AG Hannam, JE Lloyd, and SS Fels. Predicting muscle patterns for hemimandibulectomy models. Computer Methods in Biomechanics and Biomedical Engineering, 13(4):483-491, 2010.
AG Hannam, Ian Stavness, JE Lloyd, SS Fels, A Miller, and D Curtis. A comparison of simulated jaw dynamics in models of segmental mandibular resection versus resection with alloplastic reconstruction. Journal of Prosthetic Dentistry, 104(3):191-198, 2010.
AG Hannam, Ian Stavness, JE Lloyd, and SS Fels. A Dynamic Model of Jaw and Hyoid Biomechanics during Chewing. Journal of Biomechanics, 41(5):1069-1076, 2008.