How Does It Work?: Positron emission tomography | 合法醫療器材資訊網

由ABerger著作·2003·被引用72次—Positronemissiontomography(PET)isatechniquethatmeasuresphysiologicalfunctionbylookingatbloodflow,metabolism,neurotransmitters,and ...

• Positron emission tomography (PET) is a technique that measures physiological function by looking at blood flow, metabolism, neurotransmitters, and radiolabelled drugs. PET offers quantitative analyses, allowing relative changes over time to be monitored as a disease process evolves or in response to a specific stimulus.

Figure 1

Gould and Deanza, Peter Arnold Inc/SPL

• The technique is based on the detection of radioactivity emitted after a small amount of a radioactive tracer is injected into a peripheral vein. The tracer is administered as an intravenous injection usually labelled with oxygen-15, fluorine-18, carbon-11, or nitrogen-13. The total radioactive dose is similar to the dose used in computed tomography.

Figure 2

• PET scans take 10-40 minutes to complete. They are painless, and, as for computed tomography, the patient is fully clothed.

• A common use for PET is to measure the rate of consumption of glucose in diffe...

Positron emission tomography | 合法醫療器材資訊網

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How Does It Work?: Positron emission tomography | 合法醫療器材資訊網

由 A Berger 著作 · 2003 · 被引用 72 次 — Positron emission tomography (PET) is a technique that measures physiological function by looking at blood flow, metabolism, neurotransmitters, and ... Read More

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