Dual-energy computed tomography in children: Technique and clinical applications

Figure 7 A 4-year-old male with hemophilia A who presented with acute headache and neck rigidity. A: Axial mixed-enhanced CT head images showed subtle extra-axial high-density lesions (indicated by arrows) in the left frontal and parietal lobes, resulting in a slight midline shift to the opposite side; B: The virtual non-contrast image confirmed that the hyperdensity (arrows) represented an acute bleed and not abnormal enhancement; C: Bone removal tool of dual energy demonstrated the bleed more clearly (arrows); D: Iodine overlay image did not show any iodine uptake in the region of the bleed.