Nasal Cavities and Frontal Sinuses

Saunders, Jimmy; Schwarz, Tobias

doi:10.1002/9781118785676.ch11

Cited by 4 publications

(5 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This finding further supports the theory that the skull might be more severely affected by dorsorotation in pugs than in French bulldogs. Using the CT images to compare the morphology of the present cases with those of normal dogs shows the sinuses are not only smaller but also located more ventrally in pugs and French bulldogs than in normal dogs.…”

Section: Discussionmentioning

confidence: 88%

See 1 more Smart Citation

Nasopharyngeal Dimensions From Computed Tomography of Pugs and French Bulldogs With Brachycephalic Airway Syndrome

et al. 2016

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 88%

“…The cross‐sectional area of the nasopharynx, defined as the air passage extending from the caudal end of the choanae to the caudal free border of the soft palate, was measured on reconstructed transverse views (Fig ). The minimum diameter of the entire nasopharynx dorsal to the hard and soft palates was assessed.…”

Section: Methodsmentioning

confidence: 99%

Nasopharyngeal Dimensions From Computed Tomography of Pugs and French Bulldogs With Brachycephalic Airway Syndrome

et al. 2016

View full text Add to dashboard Cite

show abstract

“…11 The canine frontal sinuses contain lateral, rostral, and medial frontal compartments, all of which communicate with the nasal cavity via the rostral compartment through the ethmoidal meati. 8,21 In horses, the single frontal sinus opens widely into the dorsal conchal sinus and the caudal maxillary sinus. 17,18 Regarding koalas, one previous study mentioned two frontal sinuses: the rostral frontal sinus and the medial frontal sinus.…”

Section: Discussionmentioning

confidence: 99%

COMPUTED TOMOGRAPHY AND MAGNETIC RESONANCE FOR THE ADVANCED IMAGING OF THE NORMAL NASAL CAVITY AND PARANASAL SINUSES OF THE KOALA (PHASCOLARCTOS CINEREUS)

Bercier¹,

Alexander²,

Gorow³

et al. 2014

Journal of Zoo and Wildlife Medicine

View full text Add to dashboard Cite

The objective of this study is to describe computed tomography (CT) and magnetic resonance (MR) for the cross-sectional imaging of the normal anatomy of the nasal cavity and paranasal sinuses of the koala (Phascolarctos cinereus), to provide reference figures for gross anatomy with corresponding CT and MR images and to compare the features of the nasal cavity and paranasal sinuses of the normal koala with that reported in other domestic species. Advanced imaging can be used to aid in diagnosis, to plan surgical intervention, and to monitor therapeutic responses to diseases of the nasal passages in koalas. One clinically normal koala was anesthetized twice for the separate acquisition of dorsal CT scan images and transverse, dorsal, and sagittal MR images of its nasal cavity and paranasal sinuses. Sagittal and transverse CT planes were reformatted. Three fresh koala skulls were also transected in one of each transverse, sagittal, and dorsal planes and photographed. The CT and MR images obtained were matched with corresponding gross anatomic images and the normal bone, tissues and airway passages were identified. All anatomic structures were readily identifiable on CT, magnetic resonance imaging (MRI), and gross images. CT and MRI are both valuable diagnostic tools for imaging the nasal cavities and paranasal sinuses of koalas. Images obtained from this project can be used as baseline references for future comparison with diseased koalas to help with diagnosis, surgical intervention, and response to therapy.

show abstract

“…Nasal mucosal inflammation is the main differential diagnosis for mucosal asymmetry in imaging studies . Administration of a topical nasal vasoconstrictor (0.05% xylometazoline), which interrupts the nasal cycle, has reportedly been helpful in making the differentiation in humans.…”

Section: Discussionmentioning

confidence: 99%

Asymmetric Nasal Mucosal Thickening in Healthy Dogs Consistent With the Nasal Cycle as Demonstrated by Mri and Ct

Friling¹,

Nyman²,

Johnson

2013

Vet Radiology Ultrasound

View full text Add to dashboard Cite

The nasal cycle is a physiological phenomenon that causes regular cyclical congestion and decongestion of the venous sinusoids lining the nasal mucosa. The purpose of this prospective study was to describe magnetic resonance imaging (MRI) and computed tomographic (CT) features of the normal nasal cycle in a group of dogs. Five dogs were recruited that met the following criteria: 8 to 15 months old, nonbrachiocephalic breed, no clinical signs or history of nasal disease, and undergoing anesthesia for problems unrelated to the nasal cavity. Nasal MRI (n = 5) and CT scans (pre- and postcontrast, n = 5) were acquired. Images were evaluated subjectively by two board-certified radiologists and objectively by a diagnostic imaging intern using regions of interest placed on each side of the nasal cavity. Findings were compared using Cohen's kappa coefficient and Students t-test on log-transformed data. All dogs showed diffuse unilateral mucosal thickening of the rostral part of the nasal cavity in both MRI and CT studies. This mucosal thickening shifted sides between examinations in three dogs. Changes appeared most marked on T2-weighted scans. No asymmetric mucosal changes were seen in the mucosa of the ethmoturbinates, vomer-nasal septum, hard palate or the frontal sinuses in any patient on MRI or CT. Computed tomographic contrast enhancement of the thickened mucosa was not statistically significant (P-value < 0.08). In conclusion, the normal nasal cycle may cause asymmetrical mucosal changes in the rostral part of the nasal cavity that mimic MRI and CT characteristics previously reported for inflammatory disease in dogs.

show abstract

Nasal Cavities and Frontal Sinuses

Cited by 4 publications

References 8 publications

Nasopharyngeal Dimensions From Computed Tomography of Pugs and French Bulldogs With Brachycephalic Airway Syndrome

Nasopharyngeal Dimensions From Computed Tomography of Pugs and French Bulldogs With Brachycephalic Airway Syndrome

COMPUTED TOMOGRAPHY AND MAGNETIC RESONANCE FOR THE ADVANCED IMAGING OF THE NORMAL NASAL CAVITY AND PARANASAL SINUSES OF THE KOALA (PHASCOLARCTOS CINEREUS)

Asymmetric Nasal Mucosal Thickening in Healthy Dogs Consistent With the Nasal Cycle as Demonstrated by Mri and Ct

Contact Info

Product

Resources

About