What are the likely impacts of power quality events on imaging systems?
Imaging systems represent a major advance in medical diagnostic and security operations. The technology, which includes computer tomography (CT scan), magnetic resonanace imaging (MRI), ultrasound and X-ray scanning systems, also is highly sensitive to electrical interference. Power disturbances can affect imaging systems in several ways. High frequency impulses can degrade analog-to-digital conversion. Repetitive high-frequency disturbances can cause poor image quality in video or CRT displays. Power disturbances with sufficient energy can lock up the computer controls and damage hardward. Voltage fluctuations can activate low-voltage detection circuits and inhibit scanning operations. Because of the critical role of imaging devices in medicine and security, any deterioration of the system or compromise of its operation is unacceptable. Variables directly affecting the sensitivity of imaging systems include grounding, system design, operating speed, data links to other equipment, and
