Simulation study on active noise control for a 4-T MRI scanner

Mingfeng Li, Teik C. Lim, Jing Huei Lee

Research output: Contribution to journalArticlepeer-review

32 Scopus citations


The purpose of this work is to study computationally the possibility of the application of a hybrid active noise control technique for magnetic resonance imaging (MRI) acoustic noise reduction. A hybrid control system combined with both feedforward and feedback loops embedded is proposed for potential application on active MRI noise reduction. A set of computational simulation studies were performed. Sets of MRI acoustic noise emissions measured at the patient's left ear location were recorded and used in the simulation study. By comparing three different control systems, namely, the feedback, the feedforward and the hybrid control, our results revealed that the hybrid control system is the most effective. The hybrid control system achieved approximately a 20-dB reduction at the principal frequency component. We concluded that the proposed hybrid active control scheme could have a potential application for MRI scanner noise reduction.

Original languageEnglish (US)
Pages (from-to)393-400
Number of pages8
JournalMagnetic Resonance Imaging
Issue number3
StatePublished - Apr 2008
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Biomedical Engineering
  • Radiology Nuclear Medicine and imaging


  • Acoustic noise
  • Active noise control
  • MRI


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