Viztek, Inc. Home > PACS and RIS > Viztek, Inc. Viztek's Opal-RAD PACS (Picture Archiving and Communications System) encompasses a powerful suite of digital radiology tools to achieve the most fully integrated patient database, imaging and communications system on the market today. Viztek Opal-RAD PACS Viztek Opal-ORTHO PACS Viztek Opal-CHIRO PACS