Diffusion false positive in trauma (PSIF 22/2/10, 75° flip angle) found in a 17-year-old who sustained a flexion injury at C3–4 after going over handlebars of waterski. Diffusion false positive in trauma (PSIF 22/2/10, 75° flip angle) found in a 17-year-old who sustained a flexion injury at C3–4 after going over handlebars of waterski. A and B, Sagittal T1-weighted (A) and T2-weighted (B) images show anterior wedge deformities of C3 and C4 bodies.C, Diffusion sequence shows slight increased signal from bodies, falsely suggesting a cellular infiltrate. Jeffrey S. Ross AJNR Am J Neuroradiol 1999;20:361-373 ©1999 by American Society of Neuroradiology