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CT scans and 3D reconstructions of Florida manatee (Trichechus manatus latirostris) heads and ear bones.
- Source :
-
Hearing research [Hear Res] 2007 Jun; Vol. 228 (1-2), pp. 123-35. Date of Electronic Publication: 2007 Mar 01. - Publication Year :
- 2007
-
Abstract
- The auditory anatomy of the Florida manatee (Trichechus manatus latirostris) was investigated using computerized tomography (CT), three-dimensional reconstructions, and traditional dissection of heads removed during necropsy. The densities (kg/m3) of the soft tissues of the head were measured directly using the displacement method and those of the soft tissues and bone were calculated from CT measurements (Hounsfield units). The manatee's fatty tissue was significantly less dense than the other soft tissues within the head (p<0.05). The squamosal bone was significantly less dense than the other bones of the head (p<0.05). Measurements of the ear bones (tympanic, periotic, malleus, incus, and stapes) collected during dissection revealed that the ossicular chain was overly massive for the mass of the tympanoperiotic complex.
- Subjects :
- Adipose Tissue anatomy & histology
Adipose Tissue diagnostic imaging
Animals
Bone Density
Dissection methods
Ear Ossicles anatomy & histology
Ear, External anatomy & histology
Ear, External diagnostic imaging
Ear, Middle anatomy & histology
Ear, Middle diagnostic imaging
Female
Head anatomy & histology
Incus anatomy & histology
Incus diagnostic imaging
Male
Malleus anatomy & histology
Malleus diagnostic imaging
Muscles anatomy & histology
Muscles diagnostic imaging
Skull anatomy & histology
Skull diagnostic imaging
Stapes anatomy & histology
Stapes diagnostic imaging
Ear Ossicles diagnostic imaging
Head diagnostic imaging
Image Interpretation, Computer-Assisted
Imaging, Three-Dimensional
Tomography, X-Ray Computed
Trichechus manatus anatomy & histology
Subjects
Details
- Language :
- English
- ISSN :
- 0378-5955
- Volume :
- 228
- Issue :
- 1-2
- Database :
- MEDLINE
- Journal :
- Hearing research
- Publication Type :
- Academic Journal
- Accession number :
- 17420106
- Full Text :
- https://doi.org/10.1016/j.heares.2007.01.029