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Objectives:
Cone beam computed tomography (CBCT) is in use in human and small animal medicine and is becoming increasingly popular in equine medicine. To evaluate the diagnostic suitability of CBCT of the equine carpal region, CBCT and multidetector computed tomography (MDCT) images of healthy carpal structures were created and compared to each other.
Methods:
Twenty-eight legs from fifteen horses, slaughtered for reasons unrelated to this study, were examined. Native and contrast enhanced CBCT and MDCT scans were performed. Anatomical structures were evaluated by three independent experienced observers using a visual scoring system (0: not visible to 3: well visualized) previously reported and adapted to the equine carpal region. A descriptive evaluation was carried out as well as Spearman’s rank correlation and interobserver agreement was shown by percent agreement (PA).
Results:
Osseous structures showed a very good visualization (median score = 3, PA = 98 – 100%). Articular cartilage could only be assessed in contrast enhanced scans whereby MDCT showed a better visualization (median score = 2,5) than CBCT (median score = 1,5). Soft tissue structures showed better visualization in MDCT too. The medial and lateral palmar intercarpal ligaments (MLPL / LPIL) were not visualized in native scans (median score = 0) but were well visualized in contrast enhanced scans (median score = 3) in both, CBCT and MDCT.
Conclusions:
For the evaluation of osseous structures and contrast enhanced articular structures, CBCT serves as a reliable diagnostic procedure for the equine carpal region. However, soft tissue structures are displayed more reliable using MDCT.
34th Annual Scientific Meeting proceedings
Stream:
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Session:
Date/Time: 30-11--0001 (00:00 - 00:00) | Location:
Date/Time: 30-11--0001 (00:00 - 00:00) | Location:
Visualization of anatomical structures in the carpal region of the horse using cone beam computed tomography (CBCT) in comparison with conventional multidetector computed tomography (MDCT)
Hagenbach M1, Cruz A*1, Koch C*2, Manso-Díaz G3, Büttner K4, Bierau J1, Staszyk C5, Röcken M1
1Equine Clinic (Surgery, Orthopedics), Faculty of Veterinary Medicine, Justus-Liebig-University Giessen, Giessen, Germany, 2Department of Clinical Veterinary Medicine, Vetsuisse Faculty, Swiss Institute of Equine Medicine (ISME), Agroscope, University of Bern, Bern, Switzerland, 3Department of Animal Medicine and Surgery, Faculty of Veterinary Medicine, Universidad Complutense de Madrid, Madrid, Spain, 4Unit for Biomathematics and Data Processing, Faculty of Veterinary Medicine, Justus-Liebig-University Giessen, Giessen, Germany, 5Institute of Veterinary-Anatomy, -Histology and -Embryology, Faculty of Veterinary Medicine, Justus-Liebig-University Giessen, Giessen, Germany.
Objectives:
Cone beam computed tomography (CBCT) is in use in human and small animal medicine and is becoming increasingly popular in equine medicine. To evaluate the diagnostic suitability of CBCT of the equine carpal region, CBCT and multidetector computed tomography (MDCT) images of healthy carpal structures were created and compared to each other.
Methods:
Twenty-eight legs from fifteen horses, slaughtered for reasons unrelated to this study, were examined. Native and contrast enhanced CBCT and MDCT scans were performed. Anatomical structures were evaluated by three independent experienced observers using a visual scoring system (0: not visible to 3: well visualized) previously reported and adapted to the equine carpal region. A descriptive evaluation was carried out as well as Spearman’s rank correlation and interobserver agreement was shown by percent agreement (PA).
Results:
Osseous structures showed a very good visualization (median score = 3, PA = 98 – 100%). Articular cartilage could only be assessed in contrast enhanced scans whereby MDCT showed a better visualization (median score = 2,5) than CBCT (median score = 1,5). Soft tissue structures showed better visualization in MDCT too. The medial and lateral palmar intercarpal ligaments (MLPL / LPIL) were not visualized in native scans (median score = 0) but were well visualized in contrast enhanced scans (median score = 3) in both, CBCT and MDCT.
Conclusions:
For the evaluation of osseous structures and contrast enhanced articular structures, CBCT serves as a reliable diagnostic procedure for the equine carpal region. However, soft tissue structures are displayed more reliable using MDCT.
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