کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1807263 1025251 2008 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Simulation study on active noise control for a 4-T MRI scanner
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Simulation study on active noise control for a 4-T MRI scanner
چکیده انگلیسی

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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Magnetic Resonance Imaging - Volume 26, Issue 3, April 2008, Pages 393–400
نویسندگان
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