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Fig. 2B —Images of round atelectasis in right lower lobe in
68-year-old man in whom diagnosis was true-negative. Transverse
diffusion-weighted (DW) image (4,654/70) obtained with b factor of 1,000
s/mm2 shows mass (arrow) with slightly lower signal
intensity compared with spinal cord; it scored 2 on 5-point rank scale. Spinal
cord scored 3 on 5-point rank scale on DW images obtained with b factor of
1,000 s/mm2.
