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. Author manuscript; available in PMC: 2016 Sep 1.
Published in final edited form as: J Magn Reson Imaging. 2016 Feb 19;44(3):521–540. doi: 10.1002/jmri.25196

FIGURE 2.

FIGURE 2

IVIM DWI performed on a 24-year old male volunteer. Coronal DWI performed over the abdomen using seven b-values (0, 25, 50, 100, 200, 400, and 800 s/mm2) at 1.5T. Diffusion coefficient (D), pseudodiffusion coefficient (D*), and perfusion fraction (f) maps are shown. Note high-quality parametric maps of D and f, while D* map is highly variable. Typical signal attenuation curves of voxel data fitting in the liver and kidneys are shown in the lower row, demonstrating biexponential behavior. IVIM DWI measurements can be made with greater confidence where there is excellent image SNR and in tissues with significant vascular perfusion, as is the case in the liver and kidneys and in many (but not all) types of cancer.