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误区一:PET-CT查癌症能“一锤定音”用PET-CT把全身扫一遍,就能将潜藏的早期肿瘤揪出来?太乐观了!对于价格昂贵的PET-CT,不少人存在着盲目的信任。PET-CT的检查原理:由于癌细胞比正常细胞的分裂更加旺盛,在葡萄糖的需求方面是正常细胞的3~8倍,因此检查时给受检者静脉注入有放射性的FDG(氟代脱氧葡萄糖),使其流遍全身,利用检查设备对FDG释放出γ射线进行摄影,由于FDG会大量聚集在癌细胞处,从而发现微小的癌灶。
Misunderstanding one: PET-CT check cancer can “hammer” Use PET-CT to scan the body again, you can pull out the hidden early tumor? Too optimistic! For expensive PET-CT, many people exist Blind trust. The principle of PET-CT examination: As cancer cells divide more strongly than normal cells, they are 3 to 8 times the normal cells in terms of glucose requirement. Therefore, the subject is given intravenous radioactive FDG (fluorodeoxyglucose ), To flow through the body, the use of inspection equipment on the release of γ-ray FDG photography, because FDG will gather in large numbers in the cancer cells, and found tiny foci.