智利采购需求：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 looking to explore options for portable ultrasound systems specifically designed for use with mice and other small animals. It's important that these units are lightweight and easy to handle while still providing high-quality imaging. If you have any models that fit this description, please share their details with me. I'm particularly interested in their specifications, features, and pricing. Looking forward to your response!