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Magnetic resonance imaging, computed tomography, and cross-sectional views of the anatomy of normal nasal cavities and paranasal sinuses in mesaticephalic dogs.
Am J Vet Res. 2003 Sep; 64(9):1093-8.AJ

Abstract

OBJECTIVE

To use computed tomography (CT) and magnetic resonance imaging (MRI) to provide a detailed description of the nasal cavities and paranasal sinuses in clinically normal mesaticephalic dogs.

ANIMALS

2 clinically normal Belgian Shepherd Dogs that weighed 25 and 35 kg, respectively.

PROCEDURE

The first dog was anesthetized and positioned in ventral recumbency for CT and MRI examinations, and transverse slices were obtained from the caudal part of the frontal sinuses to the nares. For MRI, T1-weighted, T2-weighted, and proton-density sequences were obtained. The second dog was anesthetized and positioned in dorsal recumbency with the head perpendicular to the table, and CT and MRI examinations were again conducted. At the completion of the MRI examination, each dog received an i.v. injection of heparin and then was euthanatized. A 4% solution of formaldehyde was perfused i.v. immediately after each dog was euthanatized. The skull was prepared, decalcified, embedded with gelatin, and sectioned into 5-mm-thick sections by use of a stainless-steel knife. Each anatomic section was photographed and compared with the corresponding CT and MRI views.

RESULTS

Structures on the CT and MRI views matched structures on the corresponding anatomic sections. The CT scans provided good anatomic detail of the bony tissues, and MRI scans were superior to CT scans for determining soft-tissue structures.

CONCLUSIONS AND CLINICAL RELEVANCE

CT and MRI provide a means for consistent evaluation of all structures of the nasal cavities and frontal sinuses. Both techniques could be useful for evaluation of diseases that affect the nasal region.

Authors+Show Affiliations

De Rycke LM
Department of Medical Imaging, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium.
Saunders JH
No affiliation info available
Gielen IM
No affiliation info available
van Bree HJ
No affiliation info available
Simoens PJ
No affiliation info available

MeSH

AnimalsDogsMagnetic Resonance ImagingNasal CavityParanasal SinusesTomography, X-Ray Computed

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

13677385

Citation

De Rycke, Lieve M., et al. "Magnetic Resonance Imaging, Computed Tomography, and Cross-sectional Views of the Anatomy of Normal Nasal Cavities and Paranasal Sinuses in Mesaticephalic Dogs." American Journal of Veterinary Research, vol. 64, no. 9, 2003, pp. 1093-8.
De Rycke LM, Saunders JH, Gielen IM, et al. Magnetic resonance imaging, computed tomography, and cross-sectional views of the anatomy of normal nasal cavities and paranasal sinuses in mesaticephalic dogs. Am J Vet Res. 2003;64(9):1093-8.
De Rycke, L. M., Saunders, J. H., Gielen, I. M., van Bree, H. J., & Simoens, P. J. (2003). Magnetic resonance imaging, computed tomography, and cross-sectional views of the anatomy of normal nasal cavities and paranasal sinuses in mesaticephalic dogs. American Journal of Veterinary Research, 64(9), 1093-8.
De Rycke LM, et al. Magnetic Resonance Imaging, Computed Tomography, and Cross-sectional Views of the Anatomy of Normal Nasal Cavities and Paranasal Sinuses in Mesaticephalic Dogs. Am J Vet Res. 2003;64(9):1093-8. PubMed PMID: 13677385.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Magnetic resonance imaging, computed tomography, and cross-sectional views of the anatomy of normal nasal cavities and paranasal sinuses in mesaticephalic dogs. AU - De Rycke,Lieve M, AU - Saunders,Jimmy H, AU - Gielen,Ingrid M, AU - van Bree,Henri J, AU - Simoens,Paul J, PY - 2003/9/19/pubmed PY - 2003/12/5/medline PY - 2003/9/19/entrez SP - 1093 EP - 8 JF - American journal of veterinary research JO - Am J Vet Res VL - 64 IS - 9 N2 - OBJECTIVE: To use computed tomography (CT) and magnetic resonance imaging (MRI) to provide a detailed description of the nasal cavities and paranasal sinuses in clinically normal mesaticephalic dogs. ANIMALS: 2 clinically normal Belgian Shepherd Dogs that weighed 25 and 35 kg, respectively. PROCEDURE: The first dog was anesthetized and positioned in ventral recumbency for CT and MRI examinations, and transverse slices were obtained from the caudal part of the frontal sinuses to the nares. For MRI, T1-weighted, T2-weighted, and proton-density sequences were obtained. The second dog was anesthetized and positioned in dorsal recumbency with the head perpendicular to the table, and CT and MRI examinations were again conducted. At the completion of the MRI examination, each dog received an i.v. injection of heparin and then was euthanatized. A 4% solution of formaldehyde was perfused i.v. immediately after each dog was euthanatized. The skull was prepared, decalcified, embedded with gelatin, and sectioned into 5-mm-thick sections by use of a stainless-steel knife. Each anatomic section was photographed and compared with the corresponding CT and MRI views. RESULTS: Structures on the CT and MRI views matched structures on the corresponding anatomic sections. The CT scans provided good anatomic detail of the bony tissues, and MRI scans were superior to CT scans for determining soft-tissue structures. CONCLUSIONS AND CLINICAL RELEVANCE: CT and MRI provide a means for consistent evaluation of all structures of the nasal cavities and frontal sinuses. Both techniques could be useful for evaluation of diseases that affect the nasal region. SN - 0002-9645 UR - https://www.unboundmedicine.com/medline/citation/13677385/Magnetic_resonance_imaging_computed_tomography_and_cross_sectional_views_of_the_anatomy_of_normal_nasal_cavities_and_paranasal_sinuses_in_mesaticephalic_dogs_ DB - PRIME DP - Unbound Medicine ER -