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KMID : 1151820180120040491
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Journal of the Korean Society of Radiology
2018 Volume.12 No. 4 p.491 ~ p.496
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Comparison with 1.5Tesla and 3.0Tesla of Acoustic Noise Spectrum of DWI MR Pulse Sequence
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Kweon Dae-Cheol
Choi Ji-Won
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Abstract
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The purpose of this study is to analyze the noise spectra in DWI (diffusion-weighted imaging) pulse sequences of 1.5 Tesla and 3.0 Tesla MRI, The ACR (American College of Radiology) phantom and noise spectrum were analyzed by FFT (fast Fourier transform) and TFFT (temporal frequency analysis) using WavePad sound editor version 8.13 (NCH software, Greenwood Village, CO, USA). Noise spectra, FFT and TFFT were analyzed for laboratory 1.5Tesla and 3.0Tesla DWI MR pulse sequences. The noise threshold of the frequency amplitude in the FFT and TFFT at 3.0Tesla compared to 1.5Tesla was between 1.5Tesla and -6 dB, and between 3.0Tesla and 0 dB, the DWI pulse sequence for the patient's noise reduction was appropriately MR examination needs to be applied.
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KEYWORD
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Acoustic noise spectrum, DWI pulse sequence, MRI
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