ARA Diagnostic Imaging is the oldest and largest diagnostic imaging group in Austin. We offer expert medical imagings provided by radiologists subspecialized such as MRI, CT scans (such an X-ray), ultrasound or interventional radiology among others; we also provide mammograms if needed! Our roots go back to 1954 when Dr Robert Snider began his work at SETON Hospital ? now known as St David's HealthCare System .