正电子发射断层照相术

1. • positron emission tomography (PET)

Character by character

• 正(zhèng)straight
• 电(diàn)lightning
• 子(zǐ)son
• 发(fā)send out
• 射(shè)shoot
• 断(duàn)break
• 层(céng)pile on top of one another
• 照(zhào)according to
• 相(xiāng)surname Xiang
• 术(shù)method