Development of a compact ultrasonic equipment for large animal practice

即使是目前可用的便携式设备，也仍然笨重，难以携带和操作，而且在没有帮助的情况下，在畜舍和围场进行准备和检查是很费力的。因此，我们开发了一种用于大型动物实践的紧凑型超声波设备。所研制的设备具有以下特点：重量轻的，仅能由一名兽医携带和处理的一种便于移动和避免动物干扰的背包式背包。一个4英寸的液晶显示器（LCD）系在考官的腰上。一个控制面板，上面有监视器上的重要功能键。对该农场设备的运行进行了评价，特别是对操作的方便性进行了评价，取得了满意的结果。并比较了液晶显示器与常规超声CRT显示器的实用性，特别是在健康奶牛和病牛各器官的图像质量方面。LCD的图像质量对于临床使用是满意的，尽管非常小的目标的分辨率有细微的下降。这种小型设备的原型被认为在大型动物实践中非常有用。

Even the portable equipment presently available is still bulky to carry and handle, and preparation and examination in livestock houses and paddocks are laborious without assistance. We, therefore, developed a compact ultrasonic equipment for large animal practice.The features of the equipment developed were as follows :1. light in weight able to be carried and handled by only one veterinarian2. a backpack type allowing for morbility and avoidance of animal interference3. a 4 inch liquid crystal display (LCD) attached to the examiner's waist4. a control panel bearing important function keys on the monitor5. run on rechargeable batteries as well as on alternating AC currentThe operation of the equipment on tha farm was evaluated especially on easiness of handling and satisfactory results were obtained. The usufulness of the LCD was also compared with the conventional ultrasonic CRT display especially in terms of image quality of various organs in healthy and diseased cows. The image quality of LCD was satisfactory for clinical use, although a subtle decline in resolution of very small targets was discernible. This prototype compact equipment was considered to be quite useful in large animal practice.