Huggons Nick A, Bell Robin J W, Puchalski Sarah M
University of California, Davis William R. Pritchard Veterinary Medical Teaching Hospital, USA.
Vet Radiol Ultrasound. 2011 Jan-Feb;52(1):53-60.
We compared the information gained from computed tomography (CT) vs. radiography in horses with nonneoplastic disease of the mandible. We hypothesized that CT would provide additional diagnostic information. Medical records, radiographs, and CT images of horses with nonneoplastic mandibular disease evaluated between 1994 and 2008 were reviewed. Nineteen horses were identified; 11 had a tooth root abscess and related disease, four had a fracture of the teeth and/or mandible, and four had a nonneoplastic mass. Both CT images and radiographs allowed identification of diseased teeth that appeared clinically normal otherwise. CT allowed identification of teeth that were clinically affected but appeared normal radiographically. Parameters such as tooth pulp involvement, lamina dura destruction, presence of bone fragments, lingual and buccal mandibular bone periosteal reaction, and cortical bone destruction were more conspicuous with CT. Performing radiography and CT in horses with nonneoplastic mandibular disease provides a more complete evaluation than either technique alone. CT contributes additional information that could otherwise be overlooked with radiographs alone in horses with a mandibular fracture. CT provides ancillary information to radiographs in horses with dental infection or a nonneoplastic mass of the mandible.
我们比较了计算机断层扫描（CT）与X线摄影在患有下颌骨非肿瘤性疾病马匹中的诊断信息。我们假设CT能提供更多诊断信息。回顾了1994年至2008年间评估的患有非肿瘤性下颌骨疾病马匹的病历、X线片和CT图像。共确定了19匹马；11匹患有牙根脓肿及相关疾病，4匹有牙齿和/或下颌骨骨折，4匹有非肿瘤性肿块。CT图像和X线片均能识别出临床上看似正常的患病牙齿。CT能识别出临床上有病变但X线片显示正常的牙齿。诸如牙髓受累、硬骨板破坏、骨碎片的存在、舌侧和颊侧下颌骨骨膜反应以及皮质骨破坏等参数在CT图像上更为明显。对患有非肿瘤性下颌骨疾病的马匹同时进行X线摄影和CT检查，比单独使用任何一种技术能提供更全面的评估。对于下颌骨骨折的马匹，CT能提供单独X线片可能忽略的额外信息。对于患有牙齿感染或下颌骨非肿瘤性肿块的马匹，CT能为X线片提供辅助信息。
