1. OverviewRECIST v1.1 (Response Evaluation Criteria in Solid Tumors v1.1): Standard criteria for assessing the response to cancer treatments, especially in solid tumors. It provides a consistent method to measure tumor burden and evaluate treatment efficacy.iRECIST (Immune-Response Evaluation Criteria in Solid Tumors): Developed to address the unique response patterns seen with immunotherapy, s..