Reconstruction of the forehead acoustic properties in an IndoPacific humpback dolphin (Sousa chinensis), with investigation on the responses of soft tissue sound velocity to temperature
Computed tomography (CT) imaging and ultrasound experimental measurements were combined to reconstruct the acoustic properties (density, velocity, and impedance) of the head from a deceased Indo-Pacific humpback dolphin (Sousa chinensis). The authors extracted 42 soft forehead tissue samples to esti...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Language: | English |
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ACOUSTICAL SOC AMER AMER INST PHYSICS
2017
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| Online Access: | http://hdl.handle.net/20.500.11937/76254 |
| _version_ | 1848763654938296320 |
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| author | Song, Zhongchang Zhang, Yu Berggren, Per Wei, Chong |
| author_facet | Song, Zhongchang Zhang, Yu Berggren, Per Wei, Chong |
| author_sort | Song, Zhongchang |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Computed tomography (CT) imaging and ultrasound experimental measurements were combined to reconstruct the acoustic properties (density, velocity, and impedance) of the head from a deceased Indo-Pacific humpback dolphin (Sousa chinensis). The authors extracted 42 soft forehead tissue samples to estimate the sound velocity and density properties at room temperature, 25.0 °C. Hounsfield Units (HUs) of the samples were read from CT scans. Linear relationships between the tissues' HUs and velocity, and HUs and density were revealed through regression analyses. The distributions of the head acoustic properties at axial, coronal, and sagittal cross sections were reconstructed, suggesting that the forehead soft tissues were characterized by low-velocity in the melon, high-velocity in the muscle and connective tissues. Further, the sound velocities of melon, muscle, and connective tissue pieces were measured under different temperatures to investigate tissues' velocity response to temperature. The results demonstrated nonlinear relationships between tissues' sound velocity and temperature. This study represents a first attempt to provide general information on acoustic properties of this species. The results could provide meaningful information for understanding the species' bioacoustic characteristics and for further investigation on sound beam formation of the dolphin. |
| first_indexed | 2025-11-14T11:06:54Z |
| format | Journal Article |
| id | curtin-20.500.11937-76254 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:06:54Z |
| publishDate | 2017 |
| publisher | ACOUSTICAL SOC AMER AMER INST PHYSICS |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-762542019-09-12T06:49:17Z Reconstruction of the forehead acoustic properties in an IndoPacific humpback dolphin (Sousa chinensis), with investigation on the responses of soft tissue sound velocity to temperature Song, Zhongchang Zhang, Yu Berggren, Per Wei, Chong Science & Technology Technology Life Sciences & Biomedicine Acoustics Audiology & Speech-Language Pathology DORSAL FIN DISFIGUREMENTS WHALE ZIPHIUS-CAVIROSTRIS SPERM-WHALE KOGIA-BREVICEPS MARINE MAMMALS BEAM FORMATION ELEMENT MODEL ECHOLOCATION FISHERIES BEHAVIOR Computed tomography (CT) imaging and ultrasound experimental measurements were combined to reconstruct the acoustic properties (density, velocity, and impedance) of the head from a deceased Indo-Pacific humpback dolphin (Sousa chinensis). The authors extracted 42 soft forehead tissue samples to estimate the sound velocity and density properties at room temperature, 25.0 °C. Hounsfield Units (HUs) of the samples were read from CT scans. Linear relationships between the tissues' HUs and velocity, and HUs and density were revealed through regression analyses. The distributions of the head acoustic properties at axial, coronal, and sagittal cross sections were reconstructed, suggesting that the forehead soft tissues were characterized by low-velocity in the melon, high-velocity in the muscle and connective tissues. Further, the sound velocities of melon, muscle, and connective tissue pieces were measured under different temperatures to investigate tissues' velocity response to temperature. The results demonstrated nonlinear relationships between tissues' sound velocity and temperature. This study represents a first attempt to provide general information on acoustic properties of this species. The results could provide meaningful information for understanding the species' bioacoustic characteristics and for further investigation on sound beam formation of the dolphin. 2017 Journal Article http://hdl.handle.net/20.500.11937/76254 10.1121/1.4974861 English ACOUSTICAL SOC AMER AMER INST PHYSICS restricted |
| spellingShingle | Science & Technology Technology Life Sciences & Biomedicine Acoustics Audiology & Speech-Language Pathology DORSAL FIN DISFIGUREMENTS WHALE ZIPHIUS-CAVIROSTRIS SPERM-WHALE KOGIA-BREVICEPS MARINE MAMMALS BEAM FORMATION ELEMENT MODEL ECHOLOCATION FISHERIES BEHAVIOR Song, Zhongchang Zhang, Yu Berggren, Per Wei, Chong Reconstruction of the forehead acoustic properties in an IndoPacific humpback dolphin (Sousa chinensis), with investigation on the responses of soft tissue sound velocity to temperature |
| title | Reconstruction of the forehead acoustic properties in an IndoPacific humpback dolphin (Sousa chinensis), with investigation on the responses of soft tissue sound velocity to temperature |
| title_full | Reconstruction of the forehead acoustic properties in an IndoPacific humpback dolphin (Sousa chinensis), with investigation on the responses of soft tissue sound velocity to temperature |
| title_fullStr | Reconstruction of the forehead acoustic properties in an IndoPacific humpback dolphin (Sousa chinensis), with investigation on the responses of soft tissue sound velocity to temperature |
| title_full_unstemmed | Reconstruction of the forehead acoustic properties in an IndoPacific humpback dolphin (Sousa chinensis), with investigation on the responses of soft tissue sound velocity to temperature |
| title_short | Reconstruction of the forehead acoustic properties in an IndoPacific humpback dolphin (Sousa chinensis), with investigation on the responses of soft tissue sound velocity to temperature |
| title_sort | reconstruction of the forehead acoustic properties in an indopacific humpback dolphin (sousa chinensis), with investigation on the responses of soft tissue sound velocity to temperature |
| topic | Science & Technology Technology Life Sciences & Biomedicine Acoustics Audiology & Speech-Language Pathology DORSAL FIN DISFIGUREMENTS WHALE ZIPHIUS-CAVIROSTRIS SPERM-WHALE KOGIA-BREVICEPS MARINE MAMMALS BEAM FORMATION ELEMENT MODEL ECHOLOCATION FISHERIES BEHAVIOR |
| url | http://hdl.handle.net/20.500.11937/76254 |