Sage Software appears to have released a PACS/RIS/Billing System.
Intergy RIS/PACS
You can find out more here ....
http://sagehealth.com/wps/wcm/myconnect/sagehealth/www.sagehealth.com/products/radiology/
The System looks rather basic based on the flash demo shown. I think it may be a good solution for a smaller institution as it integrates all the primary functions of a Radiology System namely PACS, RIS and Billing, all in one.
