Cone beam computed tomography and intraoral radiography for diagnosis of dental abnormalities in dogs and cats

Roza, Marcello Rodrigues da; Silva, Luiz Antonio F.; Barriviera, Maurício; Januário, Alessandro Lourenço; Bezerra, Ana Cristina Barreto; Fíoravantí, Maria Clorínda Soares

doi:10.4142/jvs.2011.12.4.387

Cited by 26 publications

(23 citation statements)

References 19 publications

(26 reference statements)

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“…Because of the severe overlap of anatomic structures in the region of the maxillary premolar teeth for the Rad, Pano, and 3-D methods, it was not surprising to find significantly improved diagnostic yield for the Slices method for all evaluated teeth in that region, which confirmed the findings of a previous study. 15 However, the fact that similar results would also be found for the maxillary canine teeth was rather unexpected because overlap of anatomic structures is limited in that region. The finding was further intriguing because even Pano scores were higher for the maxillary canine teeth when compared with scores for the Rad method, which raised the question of whether the bisecting angle used for dental radiographs might obscure anatomic detail and, potentially, also associated pathological changes in brachycephalic breeds.…”

Section: Discussionmentioning

confidence: 61%

“…Studies conducted in veterinary 15 and human 16 dentistry found that CBCT imaging is superior to intraoral dental radiography with regard to general criteria such as duration of examination, anesthesia time, radiation exposure, and associated risks for patients. Authors of multiple morphometric studies 10,16,17 further concluded that a tridimensional imaging modality, such as CBCT, is better suited for identification of anatomic landmarks than are 2-D imaging modalities, such as dental radiography.…”

Section: Discussionmentioning

confidence: 99%

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Evaluation of the diagnostic yield of dental radiography and cone-beam computed tomography for the identification of anatomic landmarks in small to medium-sized brachycephalic dogs

Döring¹,

Arzi²,

Barich³

et al. 2018

ajvr

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OBJECTIVE To evaluate the diagnostic yield of dental radiography (Rad method) and 3 cone-beam CT (CBCT) methods for the identification of predefined anatomic landmarks in brachycephalic dogs. ANIMALS 19 client-owned brachycephalic dogs admitted for evaluation and treatment of dental disease. PROCEDURES 26 predefined anatomic landmarks were evaluated separately by use of the RAD method and 3 CBCT software modules (serial CBCT slices and custom cross sections, tridimensional rendering, and reconstructed panoramic views). A semiquantitative scoring system was used, and mean scores were calculated for each anatomic landmark and imaging method. The Friedman test was used to evaluate values for significant differences in diagnostic yield. For values that were significant, the Wilcoxon signed rank test was used with the Bonferroni-Holm multiple comparison adjustment to determine significant differences among each of the 6 possible pairs of diagnostic methods. RESULTS Differences of diagnostic yield among the Rad and 3 CBCT methods were significant for 19 of 26 anatomic landmarks. For these landmarks, Rad scores were significantly higher than scores for reconstructed panoramic views for 4 of 19 anatomic landmarks, but Rad scores were significantly lower than scores for reconstructed panoramic views for 8 anatomic landmarks, tridimensional rendering for 18 anatomic landmarks, and serial CBCT slices and custom cross sections for all 19 anatomic landmarks. CONCLUSIONS AND CLINICAL RELEVANCE CBCT methods were better suited than dental radiography for the identification of anatomic landmarks in brachycephalic dogs. Results of this study can serve as a basis for CBCT evaluation of dental disorders in brachycephalic dogs.

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Section: Discussionmentioning

confidence: 61%

Section: Discussionmentioning

confidence: 99%

Evaluation of the diagnostic yield of dental radiography and cone-beam computed tomography for the identification of anatomic landmarks in small to medium-sized brachycephalic dogs

Döring¹,

Arzi²,

Barich³

et al. 2018

ajvr

View full text Add to dashboard Cite

show abstract

“…To date, available literature has concentrated on the use of CBCT for dental abnormalities in dogs, cats and rabbits [15–18]. …”

Section: Introductionmentioning

confidence: 99%

Cone-beam computed tomography of the head in standing equids

et al. 2019

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Background Computed tomography in standing horses has revolutionized diagnostic imaging. The O-arm®, a cone beam computed tomography (CBCT) scanner with a gantry opening of 96.5 cm is routinely used for image-guided spine and neurosurgery in humans. The aim of this study is to describe the set-up and first experiences using the O-arm® to achieve CBCT imaging of the head in standing horses. CT imaging of the predefined region of interest (ROI) was tested on 2 cadaveric heads, concentrating on centering issues within the gantry, as well as determining the number of scans needed per ROI. All horses presented with head-related diseases and subjected to a CBCT examination between February 2015 and November 2016 for CBCT were included. Per scan, a limited field of view, i.e. a cylindrical volume of 21 cm in diameter and 16 cm in height was acquired within 13 s. Depending on the dimensions of the ROI, the minimum number of scans could range from one to six, if the entire equine head is to be examined in an adult horse. Results Sixty-eight horses were included, five of which had a follow-up CBCT exam, and two of which were presented twice for two different indications (75 clinical cases). A total number of 449 acquired three-dimensional (3D) scans were recorded for these 75 cases. Two-hundred and forty-two 3D scans (54%) were considered as diagnostic quality. The imaging procedure was generally well tolerated by the sedated, standing equid, and diagnostic studies were performed in 73 out of 75 cases (97.3%). Motion artefacts and inadequate centering of the ROI were the most common reasons for non-diagnostic quality images and repeat scans of the same ROI. Conclusions CBCT is a valuable imaging modality for the equine head. Advantages of the O-arm® compared to a conventional multi-slice helical CT for imaging of the head in standing equids include the rapid image acquisition, the gantry’s mobility in all dimensions, and the free movability of the entire imaging unit. Disadvantages include the considerable sensitivity to motion artefact, increased scatter, low soft tissue contrast and the limited dimensions of the field of view.

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“…I ntraoral dental radiography is the established gold standard for canine dental imaging. More recently added diagnostic values of conventional computed tomography (CT) and cone beam CT have been demonstrated in people and recently also dogs and cats . CT is an efficient and widely used imaging modality for the canine head.…”

Section: Introductionmentioning

confidence: 99%

Optimized Canine Dental Computed Tomographic Protocol in Medium‐sized Mesaticepahlic Dogs

Esmans

Soukup

Schwarz

2014

Vet Radiology Ultrasound

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The purpose of this study was to develop an optimized imaging protocol for canine dental imaging using single-detector row CT and multidetector row CT. Two medium-sized mesaticephalic cadaver dog heads were scanned using varying slice thickness, sequential vs. helical scanning mode, sequential CT table increment, pitch, image reconstruction algorithm, and an additional moderate edge enhancement filter. For each series, two reviewers scored dental roots as not visible (score: 0), partially visible (score: 1) or completely visible (score: 2). Sharpness of the dento-alveolar margin was scored as blurry (score: 0), sharp (score: 1) or very sharp (score: 2). Consensus reader scores were compared among CT protocols. For single-detector row CT, complete visualization of all tooth roots was only achieved with 1 mm slice thickness and image interval sequential or helical series (pitch of 1 or 2) using a high-frequency image reconstruction algorithm with or without additional edge enhancement. For four-detector row CT, complete visibility of all tooth roots was recorded in all series. For single-detector row CT, all medium frequency algorithm series yielded blurry margin scores and all other series yielded sharp margin scores. For four-detector row CT, sequential and helical 0.5 mm thickness images yielded very sharp dento-alveolar margin scores, whereas the 1 mm series yielded only sharp margin scores. Authors concluded that the optimal dental imaging protocol was a sequential mode 1 mm slice thickness and interval with a high-frequency image reconstruction algorithm and an additional moderate edge enhancement filter.

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Cone beam computed tomography and intraoral radiography for diagnosis of dental abnormalities in dogs and cats

Cited by 26 publications

References 19 publications

Evaluation of the diagnostic yield of dental radiography and cone-beam computed tomography for the identification of anatomic landmarks in small to medium-sized brachycephalic dogs

Evaluation of the diagnostic yield of dental radiography and cone-beam computed tomography for the identification of anatomic landmarks in small to medium-sized brachycephalic dogs

Cone-beam computed tomography of the head in standing equids

Optimized Canine Dental Computed Tomographic Protocol in Medium‐sized Mesaticepahlic Dogs

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