title: The brain scan.
mesh_terms: D001921:Brain; D001930:Brain Injuries / Q000175:diagnosis; D001932:Brain Neoplasms / Q000175:diagnosis; D003951:Diagnostic Errors; D006801:Humans; D007249:Inflammation / Q000175:diagnosis; D008579:Meningioma / Q000175:diagnosis; D011877:Radionuclide Imaging; D012888:Skull Neoplasms / Q000175:diagnosis; D013667:Technetium; D014652:Vascular Diseases / Q000175:diagnosis
chemical_list: D013667:Technetium