positron emission tomography lietuviškai

Paaiškinimas anglų kalba

• using a computerized radiographic technique to examine the metabolic activity in various tissues (especially in the brain)
• a tomograph that produces cross-sectional X-rays of metabolic processes in the body
• An imaging technique using compounds labelled with short-lived positron-emitting radionuclides (such as carbon-11, nitrogen-13, oxygen-15 and fluorine-18) to measure cell metabolism. It has been useful in study of soft tissues such as CANCER; CARDIOVASCULAR SYSTEM; and BRAIN. SPECT is closely related to PET, but uses isotopes with longer half-lives and resolution is lower.