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An active noise control system using DXHS algorithm for MR noise

Recently, magnetic resonance imaging (MRI) devices are used in many medical institutions on the grounds of safety and convenience. An open-configuration MR system is introduced at Shiga University of Medical Science in order to conduct microwave coagulation therapy by using near-realtime MR images. However, this system has a fatal defect. The MRI device generates serious acoustic noises (MR noise) during operation. Hence, surgeons and other medical staff (e.g. nurses and anesthetists) suffer from MR noise and cannot communicate with each other during operation. In this paper, therefore, we study an active noise control (ANC) system using delayed-x harmonics synthesizer (DXHS) algorithm in order to reduce the MR noise. Some simulation results demonstrate the effectiveness of the system.