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| Classification of Response | Criteria Definition |
|---|---|
| Complete response (CR) | No intratumoral arterial enhancement in all target lesions |
| Partial response (PR) | ≥ 30% reduction of the sum of diameters of viable (enhancement in the arterial phase) targets lesions |
| Stable disease (SD) | Feature classifiable as neither partial response nor progressive disease |
| Progressive disease (PD) | ≥ 20% increase in the sum of the diameters of viable target lesions |
