澳大利亚采购需求：黑白超声波、彩色多普勒超声波、心电图、数字X光、病人监护仪

I'm currently looking to scan my flock of 500 ewes and I'm interested in purchasing a suitable scanning unit that would enable me to do this efficiently on my own. I'm keen on understanding the options available in terms of units that are most appropriate for my needs, considering factors like ease of use, effectiveness, and support for different flock sizes. Additionally, I would like to inquire about the training required to operate the scanning unit effectively. Specifically, I'm interested in the duration of the training, whether it's online or in-person, and any additional resources you might provide. Your guidance on these matters would be greatly appreciated as I look to make an informed decision.