I don't know how it goes in the US, but AFAIK there needs to be an actual medical reason to expose people to ionizing radiation. That is presuming that you would want to go for the most affordable option of using CT scanner which would set you back for three quarters of a mil approximately in hardware alone. Using an MRI would easily double or triple that, but it would provide better image.

I don't think there's enough rich pineal gland enthusiast to justify the cost, even if the system was truck mounted and mobile and thus hypothetically able to reach wider customer base.