For setups intended to be handled entirely by one individual, the equipment that truly fits the requirement are handheld or cart-based ultrasound and lightweight DR X-ray systems. Modern handheld ultrasound units can be small enough to fit in one hand or a backpack, are incredibly lightweight, and plug directly into smart devices.
If you're aiming for a genuinely one-operator portable system, the most realistic options are mini ultrasound devices and portable digital X-ray. Modern portable ultrasound scanners can be the size of a phone or tablet, typically weigh just a couple of pounds, and connect to a laptop, tablet, or even a phone.