Multidetector CT and cone-beam CT have substantial agreement in detecting dental and sinus abnormalities in equine cadaver heads.

Autor: van Zadelhoff C; Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush Estate, Roslin, UK., Liuti T; Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush Estate, Roslin, UK., Dixon PM; Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush Estate, Roslin, UK., Reardon RJM; Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush Estate, Roslin, UK.
Jazyk: angličtina
Zdroj: Veterinary radiology & ultrasound : the official journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association [Vet Radiol Ultrasound] 2021 Jul; Vol. 62 (4), pp. 413-420. Date of Electronic Publication: 2021 May 14.
DOI: 10.1111/vru.12978
Abstrakt: The performance of cone-beam CT (CBCT) systems compared to conventional helical multidetector CT (MDCT) imaging of the equine head is unknown. The aim of this prospective, method-comparison study was to compare the ability of CBCT and MDCT to detect abnormalities in equine cadaver heads. Eleven equine cadaver heads were scanned using a CBCT scanner and a 64-slice MDCT scanner. Consensus evaluations for CBCT and MDCT scans were performed by three observers. Identified abnormalities were grouped into subcategories with a focus on dental abnormalities. Kappa agreement values between detected abnormalities for CBCT and MDCT methods were calculated. Of 468 teeth evaluated, 122 (26.1%) were found to have abnormalities (including in 58 infundibula and 7 pulps) using MDCT and 105 (22.4%) were found to have abnormalities (including in 52 infundibula and 2 pulps) using CBCT. The agreement between CBCT and MDCT was almost perfect for overall detection of dental abnormalities (k = 0.90) with k = 1 for diastema k = 0.95 for clinical crown abnormalities, and k = 0.93 for infundibular abnormalities. However, the detection of pulp changes by CBCT was only moderate k = 0.44. Increased scatter radiation, non-calibrated Hounsfield Unit and artefacts in CBCT images made accurate identification of the pulp density difficult. In conclusion, CBCT results were similar to conventional MDCT for the majority of dental abnormalities, however, pulp abnormalities were not reliably identified using CBCT, potentially limiting its clinical use for detecting endodontic disease in its current form. Further comparison with more cases with confirmed dental disease and studies in clinical cases are warranted.
(© 2021 American College of Veterinary Radiology.)
Databáze: MEDLINE
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