Positron-Emission Tomography |
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| PET Scans; Positron Emission Tomography; Scan, PET; Scans, PET; Tomography, Positron Emission | |
| 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. | |