“We purchased a refurbished Siemens SOMATOM 16-slice CT and my understanding is that they basically overhauled the whole unit,” says Paul Deloia, CEO of Tristan Associates, a Harrisburg, PA-based group of digital imaging centers. “They replaced everything that needed to be replaced and we received the same warranty as if we bought a new one. Some vendors just perform cosmetic changes like painting the unit and don’t really replace the circuitry and tubes.” The old adage rings true: knowledge is power and knowing that the system has been overhauled by the same manufacturer that created it, and therefore knows it best,.