1.
PET Response Criteria in Solid Tumors (PERCIST) (2009)
| Category | Definition |
| It is recommended to adopt lean body weight (LBW) calibration standard uptake value (standardized uptake value) to reduce the influence of patients’ weight change on parameters during treatment. | |
| Complete metabolic remission (CMR) | The uptake of 18F-FDG in the lesions can be completely disappeared, which is lower than the average radiation activity of liver, and cannot be distinguished from the background area of surrounding blood pool |
| Partial metabolic remission (PMR) | The uptake of target lesion 18F-FDG decreased more than 30% and the absolute value decreased more than 0.8 |
| Stable disease metabolic (SMD) | Not CMR, PMR, PMD |
| Progressed disease metabolic (PMD) | The uptake of target lesion 18F-FDG increased more than 30% and the absolute value increased more than 0.8; Or the new lesion come out. |