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. Author manuscript; available in PMC: 2018 Feb 1.
Published in final edited form as: J Magn Reson Imaging. 2016 Sep 30;45(2):337–355. doi: 10.1002/jmri.25479

Figure 3.

Figure 3

Common artifacts of breast DWI, illustrated in separate subjects. (a) Magnetic susceptibility artifact (arrow) causing distortion at air/tissue skin surface on DWI (right) compared with undistorted T1-weighted image (left). (b) Nyquist ghost artifact, appearing at N/4 due to parallel imaging undersampling, duplicating signal from the parenchyma on DWI (left) and resulting ADC map (right). (c) Spatial distortion (arrows) and chemical shift artifact (arrowhead) of DWI due to poor shimming compared with undistorted T1-weighted image (left) (d) Detrimental chemical shift artifacts on DWI (left, arrows) due to poor fat suppression, causing artifactual reductions of ADC within the breast parenchyma (right, arrows).