What is the term for the correction method that accounts for partial-volume effects in PET imaging?

The term referring to the correction method that accounts for partial-volume effects in PET imaging is the Recovery Coefficient. Partial-volume effects occur due to the finite spatial resolution of PET scanners, which can lead to the underestimation of radioactivity concentration in small lesions or structures. The Recovery Coefficient quantifies how much the measured activity deviates from the actual activity due to these limitations in spatial resolution. By applying this correction factor, clinicians can enhance the accuracy of quantifying radiotracer concentrations, thereby improving the diagnostic quality of PET images.

Understanding this concept is crucial as it allows for more precise interpretation of PET scans, especially in detecting small tumors or assessing response to therapy. The Recovery Coefficient provides a standardized way to correct activity measurements, ultimately aiding in better treatment planning and patient management.