. "positron emission tomography"^^ . . "using a computerized radiographic technique to examine the metabolic activity in various tissues (especially in the brain)"@en-us . . "positron emission tomography"@en-us . . "00902376-n"^^ . . . "100848398"@en-us . . "PET"@en-us . . . "100902376"^^ . . . "0"^^ . . . "0"^^ . . . . . "100579958"@en-us . . .