Figure 4. (a) 60-year-old man with benign acute vertebral body compression fractures. Sagittal MR diffusion weighted image (TR/TE 8000/92) with b-factor of1000 s mm^-2 showing signal hypointensity in the fractured vertebral body (arrow) of the lumbar spine. (b) 71-year-old woman with malignant (pulmonary carcinoma metastasis) acute vertebral bodycompression fractures. Sagittal MR diffusion weighted image (TR/TE 8000/92) with b-factor of 1000 s mm^-2 showing signal hyperintensity in the fractured vertebral bodies of the lumbar spine (arrow).