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Fig. 7B —Diffusion-weighted imaging (DWI) performed during
free-breathing of 65-year-old man with rectal cancer. Thin-partition DWI can
be achieved using free-breathing technique. In this example, axial image with
b value of 750 s/mm2 (B) is displayed using inverted gray
scale; image shows areas of restricted diffusion corresponding to area of
rectal tumor (arrows) and 4-mm mesorectal lymph node
(circles). Thinner slice partition allows multiplanar reformats for
anatomic localization. Addition perirectal nodes (arrowheads,
D) are also visible on sagittal reformatted image (D). Note
corresponding features on T2-weighted MRI (A).
