High frequency ultrasonic characterization of human vocal fold tissue

Recently, endolaryngeal sonography at frequencies ranging from 10 to 30 MHz has been found to be useful in diagnosing diseases of the vocal folds (VFs). However, image resolution can be further improved by ultrasound at higher frequencies, necessitating the measurement of high-frequency acoustic pro...

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Bibliographic Details
Published in:The Journal of the Acoustical Society of America 2007-09, Vol.122 (3), p.1827-1832
Main Authors: HUANG, Chih-Chung, LEI SUN, DAILEY, Seth H, WANG, Shyh-Hau, KIRK SHUNG, K
Format: Article
Language:English
Subjects:
Acoustical measurements and instrumentation
Acoustics
Biological and medical sciences
Ear and associated structures. Auditory pathways and centers. Hearing. Vocal organ. Phonation. Sound production. Echolocation
Elasticity
Exact sciences and technology
Fundamental and applied biological sciences. Psychology
Fundamental areas of phenomenology (including applications)
Humans
Image Enhancement
Larynx - diagnostic imaging
Larynx - physiology
Phonation - physiology
Physics
Sensitivity and Specificity
Ultrasonography
Vertebrates: nervous system and sense organs
Vocal Cords - anatomy & histology
Vocal Cords - diagnostic imaging
Vocal Cords - physiology
Voice - physiology
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Summary:Recently, endolaryngeal sonography at frequencies ranging from 10 to 30 MHz has been found to be useful in diagnosing diseases of the vocal folds (VFs). However, image resolution can be further improved by ultrasound at higher frequencies, necessitating the measurement of high-frequency acoustic properties of VF tissue. The ultrasonic parameters of integrated backscatter, sound velocity, and frequency-dependent attenuation coefficient were measured in both the lamina propria (LP) and vocalis muscle (VM) of human VFs using a 47 MHz high-frequency ultrasonic transducer. The integrated backscatter was -173.44+/-6.14 (mean+/-s.d.) and -195.13+/-3.58 dB in the LP and VM, respectively, the sound velocity was 1667.68+/-44.9 and 1595.07+/-39.33 ms, and the attenuation coefficient at 47 MHz was 8.28+/-1.72 and 7.17+/-1.30 dBmm. The difference between these ultrasonic parameters may be attributed to variations in the structure and fiber concentrations in VF tissue. These results could serve as a useful clinical reference for the further development of high-frequency ultrasound devices for endolarynx sonography applications.
ISSN:0001-4966
1520-8524
DOI:10.1121/1.2756759