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Computed tomographic anatomy of the nasal cavity, paranasal sinuses and tympanic cavity of the koala.
Aust Vet J. 2013 Sep; 91(9):353-65.AV

Abstract

OBJECTIVE

To use cross-sectional imaging (helical computed tomography (CT)) combined with conventional anatomical dissection to define the normal anatomy of the nasal cavity and bony cavitations of the koala skull.

METHODS

Helical CT scans of the heads of nine adult animals were obtained using a multislice scanner acquiring thin slices reconstructed in the transverse, sagittal and dorsal planes. Subsequent anatomical dissection permitted confirmation of correct identification and further delineation of bony and air-filled structures visible in axial and multiplanar reformatted CT images.

RESULTS

The nasal cavity was relatively simple, with little scrolling of nasal conchae, but bony cavitations were complex and extensive. A rostral maxillary recess and ventral conchal, caudal maxillary, frontal and sphenoidal paranasal sinuses were identified and characterised. Extensive temporal bone cavitation was shown to be related to a large epitympanic recess.

CONCLUSIONS

The detailed anatomical data provided are applicable to future functional and comparative anatomical studies, as well as providing a preliminary atlas for clinical investigation of conditions such as cryptococcal rhinosinusitis, a condition more common in the koala than in many other species.

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Authors+Show Affiliations

Hemsley S
Faculty Veterinary Science B01, University of Sydney, New South Wales, Australia. shemsley01@optusnet.com.au
Palmer H
No affiliation info available
Canfield RB
No affiliation info available
Stewart ME
No affiliation info available
Krockenberger MB
No affiliation info available
Malik R
No affiliation info available

MeSH

AnimalsEar, MiddleFemaleMaleNasal CavityParanasal SinusesPhascolarctidaeTomography, X-Ray Computed

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

23980827

Citation

Hemsley, S, et al. "Computed Tomographic Anatomy of the Nasal Cavity, Paranasal Sinuses and Tympanic Cavity of the Koala." Australian Veterinary Journal, vol. 91, no. 9, 2013, pp. 353-65.
Hemsley S, Palmer H, Canfield RB, et al. Computed tomographic anatomy of the nasal cavity, paranasal sinuses and tympanic cavity of the koala. Aust Vet J. 2013;91(9):353-65.
Hemsley, S., Palmer, H., Canfield, R. B., Stewart, M. E., Krockenberger, M. B., & Malik, R. (2013). Computed tomographic anatomy of the nasal cavity, paranasal sinuses and tympanic cavity of the koala. Australian Veterinary Journal, 91(9), 353-65. https://doi.org/10.1111/avj.12098
Hemsley S, et al. Computed Tomographic Anatomy of the Nasal Cavity, Paranasal Sinuses and Tympanic Cavity of the Koala. Aust Vet J. 2013;91(9):353-65. PubMed PMID: 23980827.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Computed tomographic anatomy of the nasal cavity, paranasal sinuses and tympanic cavity of the koala. AU - Hemsley,S, AU - Palmer,H, AU - Canfield,R B, AU - Stewart,M E B, AU - Krockenberger,M B, AU - Malik,R, PY - 2013/02/20/accepted PY - 2013/8/29/entrez PY - 2013/8/29/pubmed PY - 2014/3/26/medline KW - computed tomography KW - koalas KW - nasal cavity KW - paranasal sinuses KW - tympanic cavity SP - 353 EP - 65 JF - Australian veterinary journal JO - Aust Vet J VL - 91 IS - 9 N2 - OBJECTIVE: To use cross-sectional imaging (helical computed tomography (CT)) combined with conventional anatomical dissection to define the normal anatomy of the nasal cavity and bony cavitations of the koala skull. METHODS: Helical CT scans of the heads of nine adult animals were obtained using a multislice scanner acquiring thin slices reconstructed in the transverse, sagittal and dorsal planes. Subsequent anatomical dissection permitted confirmation of correct identification and further delineation of bony and air-filled structures visible in axial and multiplanar reformatted CT images. RESULTS: The nasal cavity was relatively simple, with little scrolling of nasal conchae, but bony cavitations were complex and extensive. A rostral maxillary recess and ventral conchal, caudal maxillary, frontal and sphenoidal paranasal sinuses were identified and characterised. Extensive temporal bone cavitation was shown to be related to a large epitympanic recess. CONCLUSIONS: The detailed anatomical data provided are applicable to future functional and comparative anatomical studies, as well as providing a preliminary atlas for clinical investigation of conditions such as cryptococcal rhinosinusitis, a condition more common in the koala than in many other species. SN - 1751-0813 UR - https://www.unboundmedicine.com/medline/citation/23980827/Computed_tomographic_anatomy_of_the_nasal_cavity_paranasal_sinuses_and_tympanic_cavity_of_the_koala_ L2 - https://doi.org/10.1111/avj.12098 DB - PRIME DP - Unbound Medicine ER -