Fig. 16

Vasculitis. a Axial STIR MRI image performed in a patient with suspected vasculitis following lung cancer chemotherapy shows an intense high signal in the wall of the ascending and descending aorta (arrows), which is indicative of active vasculitis. b Sagittal FDG PET image in the same patient shows the intense uptake along the wall of the thoracic aorta (arrow). c This high uptake is localized better to the aortic wall (arrow) using the fused PET/MR image (bottom)