Blood vessel, Gray matter, White matter, Cerebral cortex, Tumor, Lesion, Eye, Eyelid, Ear canal, Jawbone, Teeth, Muscle fiber, Nerve cell, Capillary, Fibrous structure, Spongy tissue, Organic material, Metallic fragment, Bone fragment, Hair follicle, Skull bone, Vertebral column, Spinal cord, Cerebrospinal fluid, Air pocket