Brachycephalic Feline Noses: CT and Anatomical Study of the Relationship between Head Conformation and the Nasolacrimal Drainage System

@article{Schlueter2009BrachycephalicFN,
  title={Brachycephalic Feline Noses: CT and Anatomical Study of the Relationship between Head Conformation and the Nasolacrimal Drainage System},
  author={Claudia L. Schlueter and Klaus Dieter Budras and Eberhard Ludewig and Elisabeth Mayrhofer and Horst E Koenig and Alice Walter and Gerhard U. Oechtering},
  journal={Journal of Feline Medicine and Surgery},
  year={2009},
  volume={11},
  pages={891 - 900}
}

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References

SHOWING 1-10 OF 30 REFERENCES

The Course of the Nasolacrimal Duct in Brachycephalic Cats

The present results strongly suggest that the specific course of the nasolacrimal duct in brachycephalic cats might hinder the drainage of the lacrimal fluid irrespective of the diameter of the lumen of theses cats.

Computed tomography-anatomy of the normal feline nasolacrimal drainage system.

Computed tomography (CT) of the nasolacrimal drainage system with and without contrast medium (barium sulfate) was used to create an anatomic basis for clinical evaluation in domestic cats. To

Morphometric Investigations of Breed‐Specific Features in Feline Skulls and Considerations on their Functional Implications

A total of 17 parameters was used to characterize the shape of the skull in a sample of 69 pure bred cats and confirmed three phenotypically different skull formations, i.e. the round‐shaped, the triangular and the cuneiform.

[Morphology and development of the cranium of Felis silvestris f. catus Linné 1758--a contribution to comparative anatomy of Carnivora. I. Introduction, material and methods, complete cranium and regio ethmoidalis].

  • S. Timm
  • Medicine
    Gegenbaurs morphologisches Jahrbuch
  • 1987
It is evident that besides general eutherian features, specific characteristics of terrestrial carnivores and felids, resp.

[Morphology and development of the cranium of Felis silvestris f. catus Linné 1758--a contribution to the comparative anatomy of the Carnivora. II. Orbitotemporal region].

  • S. Timm
  • Biology
    Gegenbaurs morphologisches Jahrbuch
  • 1987
The following development towards Felis 1 and 2 gives an interesting example for the elements changing their configuration and position during ontogenesis and thereby illustrates the problems of interpreting these conditions phylogenetically and systematically.

Evaluation of lacrimal obstruction secondary to facial fractures using computed tomography or computed tomographic dacryocystography.

  • H. Glatt
  • Medicine
    Ophthalmic plastic and reconstructive surgery
  • 1996
CT or CT dacryocystography prior to lacrimal surgery in patients with previous facial fractures may facilitate preoperative planning and intraoperative execution and it is recommended that the cost of these studies be minimized by adherence to streamlined protocols widely used in sinus CT.

Dacryocystorhinography in the dog and cat.

The normal nasolachrymal systems of the dog and cat were investigated by dacryocystorhinography and latex preparations and abnormalities associated with obstructions, deviations, a congenital defect and invasion of the system were demonstrated.

Computed tomography dacryocystography evaluation of the nasolacrimal apparatus.

  • S. NykampP. ScrivaniA. Pease
  • Medicine
    Veterinary radiology & ultrasound : the official journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association
  • 2004
Computed tomography-dacryocystography (CT-DCG) was used to evaluate the nasolacrimal system in four patients that were admitted for evaluation of chronic epiphora, facial swelling, or facial trauma.

Combined computed tomography and dacryocystography for complex lacrimal problems.

In selected cases, such as those involving severe facial trauma, midfacial tumours, significant sinus disease, or previous lacrimal, nasal or sinus surgery, this imaging technique may be useful in better evaluating the anatomy of the Lacrimal system and planning a surgical approach.

Morphogenesis of the human excretory lacrimal system

The aim of this study was to determine the principal developmental stages in the formation of the excretory lacrimal system in humans and to establish its morphogenetic period. The study was