O'Brien R T, Biller D S
Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, USA.
Vet Clin North Am Food Anim Pract. 1996 Mar;12(1):263-75. doi: 10.1016/s0749-0720(15)30447-3.
Radiography will remain the most popular imaging modality in the near future for many reasons. It is economical, portable, and familiar to large animal practitioners. Contrast radiography allows evaluation of vascular and tract lesions. Other modalities may offer various advantages. Diagnostic sonography has the advantage of being able to evaluate soft tissue structure damage, fluid pockets, and lucent foreign bodies. Xeroradiography and CR use conventional, high-powered x-ray units for the production of images on nontraditional ionized film plate-cassette systems. Both systems provide superior bone-soft tissue contrast, by virtue of edge enhancement, than does conventional radiography. CT and MR imaging provide cross-sectional imaging of bones and adjacent structures, avoiding structures that may be superimposed on the area of interest with conventional radiography. The major limitation is the demand for a custom-engineered couch able to withstand the weight of an adult bovine. Scintigraphy provides important functional information for the clinical evaluation of orthopedic disease. It may be the most useful imaging tool to localize the cause of lameness.
由于多种原因，X线摄影在不久的将来仍将是最受欢迎的成像方式。它经济实惠、便于携带，并且为大型动物从业者所熟知。造影X线摄影可用于评估血管和管道病变。其他成像方式可能具有各种优势。诊断性超声检查的优势在于能够评估软组织结构损伤、液腔和透亮的异物。干板X线摄影和计算机X线摄影（CR）使用传统的高功率X线设备，在非传统的电离胶片暗盒系统上生成图像。借助边缘增强技术，这两种系统都能提供比传统X线摄影更好的骨-软组织对比度。CT和MRI成像提供骨骼及相邻结构的横断面成像，避免了传统X线摄影中可能叠加在感兴趣区域上的结构。主要限制是需要定制设计的检查床，以承受成年牛的体重。闪烁扫描术为骨科疾病的临床评估提供重要的功能信息。它可能是定位跛行原因最有用的成像工具。
