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[Assessment of velopharyngeal function in normal speech by CT]
1Department of Oral and Maxillofacial Surgery, Ninth People's Hospital, Shanghai Second Medical University, Shanghai 200011, China.
Summary
Computed tomography (CT) offers an objective method to assess velopharyngeal function. This imaging technique quantitatively analyzes velopharyngeal orifice dimensions and closure patterns for speech evaluation.
Area of Science:
- Medical imaging
- Speech science
- Anatomy
Context:
- Velopharyngeal function is crucial for normal speech production.
- Current assessment methods may lack objectivity.
- Understanding velopharyngeal dynamics aids in diagnosing and treating speech disorders.
Purpose:
- To establish a quantitative, objective method for assessing velopharyngeal function using CT.
- To analyze the three-dimensional conformation and dimensions of the velopharyngeal orifice.
Summary:
- CT scans of 30 subjects were analyzed at rest and during the /i:/ vowel position.
- Measurements included linear distance and area of the velopharyngeal orifice.
- Common closure patterns (coronary, semi-ring, ring) and their positions were identified and quantified.
Impact:
- CT provides a non-invasive, objective tool for evaluating velopharyngeal function.
- Quantitative data from CT can improve diagnostic accuracy for speech disorders.
- This method enhances the understanding of velopharyngeal mechanics in speech production.