Methods Explanted lumbosacral discs fro m 13 dogs of different ages were scanned using ultrasound and the images were gr aded according to pathology of the intervertebral disc degeneration.

• 方法:对13只不同年龄犬腰骶部椎间盘进行离体超声扫查,结合椎间盘退变的大体病理变化分析超声图像并将其分级。