O'Brien R T, Biller D S
Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, USA.
Vet Clin North Am Equine Pract. 1998 Aug;14(2):259-71. doi: 10.1016/s0749-0739(17)30197-9.
Radiography continues to be the initial test of choice in equine dental imaging for reasons of availability and ability to detect bone and tooth changes. Contrast radiography may be useful to characterize dental involvement in cases with draining tracts. For radiographically occult lesions, other modalities are useful. CT is better than plain radiography due to the inherent avoidance of superimposition of the opposite dental arcade, excellent bone density characterization, and good spatial resolution. Nuclear medicine may be useful to verify bone involvement in the dental region in cases in which the signs are particularly vague or not readily localized. Ultrasonography is an excellent test for soft tissue characterization and may assist with the characterization of suspected bone lysis, pathologic fractures, and abscesses.
由于可及性以及检测骨骼和牙齿变化的能力，X线摄影仍然是马牙科成像的首选初始检查方法。对比X线摄影对于确定有引流道病例的牙齿受累情况可能有用。对于X线摄影隐匿的病变，其他检查方式很有用。由于能避免对侧牙弓的重叠、出色的骨密度特征显示及良好的空间分辨率，CT比普通X线摄影更好。在体征特别模糊或不易定位的病例中，核医学检查对于确认牙齿区域的骨骼受累情况可能有用。超声检查是软组织特征显示的极佳检查方法，可辅助确定可疑的骨质溶解、病理性骨折及脓肿情况。
