Additionally, the scanner cost is only part the price. There is the Faraday cage, chilling, room setup, building strengthening, scanner install and shipping cost, peripheral equipment (compatible monitoring, injectors, compatible beds and chairs etc). It probably comes in at a doubling of the cost of the actual scanner.
While reducing the cost of the install and running will help a lot, the staffing is the larger cost in radiology, as techs and radiologists are expensive.
Costs will vary hugely depending on where you are in the world, but it isn't cheap anywhere.