Diffusion-Weighted Imaging of the Liver: Techniques and Applications

作者：Lewis Sara; Dyvorne Hadrien; Cui Yong; Taouli Bachir^*

来源：Magnetic Resonance Imaging Clinics of North America, 2014, 22(3): 373-+.

DOI：10.1016/j.mric.2014.04.009

• Diffusion
• Liver MRI
• Apparent diffusion coefficient
• Liver lesion detection
• Liver lesion characterization
• IVIM
• Cirrhosis
• Echo planar imaging

Diffusion-weighted imaging (DWI) is a technique that assesses the cellularity, tortuosity of the extracellular/extravascular space, and cell membrane density based on differences in water proton mobility in tissues. The strength of the diffusion weighting is reflected by the b value. DWI using several b values enables the quantification of the apparent diffusion coefficient. DWI is increasingly used in liver imaging for multiple reasons: it can add useful qualitative and quantitative information to conventional imaging sequences; it is acquired relatively quickly; it is easily incorporated into existing clinical protocols; and it is a noncontrast technique.

• 出版日期2014-8