"Create a medical imaging scan of a human brain with a PET (Positron Emission Tomography) scan, highlighting areas of high metabolic activity in color, with a realistic and detailed 3D visualization, combining CT or MRI technology, using fluorodeoxyglucose (FDG) as a tracer, and displaying a cross-sectional view of the brain with detected tumors or disorders, in a style reminiscent of a nuclear medicine scan, with a futuristic and high-tech feel."