Real valued diffusion-weighted imaging using decorrelated phase filtering

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• 作者：Tim Sprenger ; Jonathan I. Sperl ; Brice Fernandez ; Axel Haase and Marion I. Menzel
• 刊名：Magnetic Resonance in Medicine
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：77
• 期：2
• 页码：559-570
• 全文大小：3705K
• ISSN：1522-2594

文摘

Because of the intrinsic low signal-to-noise ratio in diffusion-weighted imaging (DWI), magnitude processing often causes an overestimation of the signal's amplitude. This results in low-estimation accuracy of diffusion models and reduced contrast because of a superposition of the image signal and the noise floor. We adopt a new phase correction (PC) technique that yields real valued diffusion data while maintaining a Gaussian noise distribution.