Comparison of Diagnostic Consistency and Diagnostic Accuracy Between Survey Radiography and Computed Tomography of the Skull in 30 Rabbits With Dental Disease

Capello, Vittorio; Cauduro, Alberto

doi:10.1053/j.jepm.2016.03.002

Cited by 19 publications

(13 citation statements)

References 8 publications

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“…As OM is often asymptomatic, knowledge of when to use CT examination is key in disease identification. CT interpretation of the rabbit head is well documented in the literature 19 32–37 . A CT grading system for ear pathology however, has not been previously described in domestic rabbits.…”

Section: Discussionmentioning

confidence: 99%

Computed tomographic grading of middle ear disease in domestic rabbits (Oryctolagus cuniculi)

Richardson¹,

Longo

Liuti

et al. 2019

Veterinary Record

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Ear disease, involving the middle and external ear, is commonly reported in pet rabbits, with lop-eared breeds predisposed. CT is the most reliable imaging modality for identifying otitis media (OM) in rabbits. This study aimed to develop a CT-based grading scale to classify the severity of CT changes in rabbits with presumed OM. Three observers independently reviewed CT images of 36 rabbits with OM. For both OM and material within the external ear canal, a grade of I to IV was used, (I=mild, IV=severe disease) and the level of agreement between reviewers was statistically evaluated. The study demonstrated that grades from the three reviewers showed a strong level of interobserver agreement. Comparisons between clinical signs and CT grade were also evaluated. Rabbits with grade IV OM had a high grade of material in the external ear canal. A high proportion of rabbits (83 per cent) underwent CT scanning conscious, demonstrating that diagnostic quality CT images are achievable without the need for anaesthetic intervention, minimising patient risk. This novel CT-based grading scale provides a methodology to correlate grade of disease with clinical signs, ear canal cytology, predisposing factors, treatment options and outcomes for rabbits with ear disease.

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Section: Discussionmentioning

confidence: 99%

Computed tomographic grading of middle ear disease in domestic rabbits (Oryctolagus cuniculi)

Richardson¹,

Longo

Liuti

et al. 2019

Veterinary Record

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“…11,14 Occasionally, they may cause dysfunction, as a space-occupying lesions of the oropharynx, leading to starvation. 14 Computed tomography has been reported for the diagnosis of dental diseases in rodents, 18,19,22 dogs, 24 and humans. 25,26 To the best of our knowledge, this diagnostic technique is sporadically described in the diagnosis of maxillary incisors pseudoodontomas in prairie dogs.…”

Section: Discussionmentioning

confidence: 99%

“…A standardized CT acquisition protocol was a requirement for inclusion. Computed tomographic examinations were performed using a single‐slice helical CT Scanner (Siemens Somatom Emotion, Milan, Italy; scanning protocol: 130 kVp, 110 mAs, slice thickness: 1 mm, pitch: 1, with the same standard and sharp reconstruction algorithms) . All CT scans had to include the entire head, from the tip of the nose to the occipital bone, with the patient in sternal recumbency and a radiolucent support placed under the mandibles for best positioning.…”

Section: Methodsmentioning

confidence: 99%

“…Computed tomographic examinations were performed using a single-slice helical CT Scanner (Siemens Somatom Emotion, Milan, Italy; scanning protocol: 130 kVp, 110 mAs, slice thickness: 1 mm, pitch: 1, with the same standard and sharp reconstruction algorithms). 21,22 All CT scans had to include the entire head, from the tip of the nose to the occipital bone, with the patient in sternal recumbency and a radiolucent support placed under the mandibles for best positioning. All CT examinations were performed under sedation with dexmedetomidine (50 mcg/kg) and ketamine (10 mg/kg) given by a single intramuscular injection.…”

Section: Descriptions Of Ct Characteristics For Affected and Normal Imentioning

confidence: 99%

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COMPUTED TOMOGRAPHIC FEATURES OF INCISOR PSEUDO‐ODONTOMAS IN PRAIRIE DOGS (CYNOMYS LUDOVICIANUS)

Pelizzone¹,

Ianni

Volta

et al. 2017

Vet Radiology Ultrasound

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Maxillary incisor pseudo-odontomas are common in pet prairie dogs and can cause progressive respiratory obstruction, while mandibular pseudo-odontomas are rarely clinically significant. The aim of this retrospective cross-sectional study was to describe CT features of maxillary and mandibular incisor pseudo-odontomas vs. normal incisors in a group of pet prairie dogs. All pet prairie dogs with head CT scans acquired during the period of 2013-2015 were included. A veterinary radiologist who was aware of final diagnosis reviewed CT scans and recorded qualitative features of affected and normal incisors. Mean density values for the pulp cavity and palatal and buccal dentin were also recorded. A total of 16 prairie dogs were sampled (12 normal maxillary incisors, 20 confirmed maxillary incisor pseudo-odontomas, 20 normal mandibular incisors, 12 presumed mandibular incisor pseudo-odontomas). Maxillary incisors with confirmed pseudo-odontomas had a significantly hyperattenuating pulp and dentin in the reserve crown and apical zone, when compared to normal maxillary incisors. Pseudo-odontomas appeared as enlargements of the apical zone with a globular/multilobular hyperattenuating mass formation haphazardly arranged, encroaching on midline and growing caudally and ventrally. Presumed mandibular incisor pseudo-odontomas had similar CT characteristics. In 60% of prairie dogs with maxillary incisor pseudo-odontomas, the hard palate was deformed and the mass bulged into the oral cavity causing loss of the palatine bone. The common nasal meatus was partially or totally obliterated in 81.8% of prairie dogs with maxillary pseudo-odontomas. Findings supported the use of CT for characterizing extent of involvement and surgical planning in prairie dogs with pseudo-odontomas.

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“…CT imaging revealed a higher sensitivity and accuracy for diagnosis of dental disease in rabbits than radiography 27 and can be used for quantitative measurement of bone mineral density 10 . When CT is not easy accessible or too expensive, conventional radiography appears to be a good method to diagnose apical elongation but cannot predict the extent of bone resorption for the animal.…”

Section: Discussionmentioning

confidence: 99%

Prevalence of dental disorders in degus and evaluation of diagnostic methods to determine dental disease and its prognosis

Bolhuis¹,

Hoffen

Langhout³

et al. 2017

Veterinary Record

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Degus () are prone to develop dental disease with deleterious health effects. The two studies reported here aimed to determine the prevalence of dental disorders in degus and to identify and evaluate diagnostic tools for determination of prognosis of these disorders. In study A, health data from 225 degus at AAP, Rescue Center for Exotic Animals in the Netherlands, were collated and the prevalence of dental disorders and differences in sex and age at clinical onset of symptoms associated with dental disorders were described. The prevalence was 34.7 per cent and higher (P<0.01) in males than in females. The occurrence of cheek teeth malocclusion was highly positively (P<0.0001) correlated to mortality. In study B, 36 skulls were examined by macroscopic evaluation, radiography and histology. Additionally, the calcium:phosphorus (Ca:P) of mandibular bone in degus with and without dental disorders were determined. There was no significant (P=0.10) difference in Ca:P between the two groups. Quantifying mandibular apical cheek teeth elongation via macroscopic evaluation was highly correlated (P<0.01) to the results obtained via radiography. Examination for apical elongation by palpation and diagnostic imaging should be included in routine health monitoring of degus. Apical elongation appeared to develop before coronal elongation and when cheek teeth malocclusion occurred, prognosis for recovery of dental disease was poor.

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Comparison of Diagnostic Consistency and Diagnostic Accuracy Between Survey Radiography and Computed Tomography of the Skull in 30 Rabbits With Dental Disease

Cited by 19 publications

References 8 publications

Computed tomographic grading of middle ear disease in domestic rabbits (Oryctolagus cuniculi)

Computed tomographic grading of middle ear disease in domestic rabbits (Oryctolagus cuniculi)

COMPUTED TOMOGRAPHIC FEATURES OF INCISOR PSEUDO‐ODONTOMAS IN PRAIRIE DOGS (CYNOMYS LUDOVICIANUS)

Prevalence of dental disorders in degus and evaluation of diagnostic methods to determine dental disease and its prognosis

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