RECIST v1.1

RECIST v1.1 (Response Evaluation Criteria in Solid Tumors) is a standardized method used by healthcare professionals to measure how well a cancer treatment is working. It involves taking detailed measurements of tumor sizes using imaging scans such as CT or MRI. Changes in these measurements help determine if the tumors have shrunk (indicating a response), stayed the same, grown (indicating progression), or disappeared. This consistent approach allows for objective comparison of treatment effectiveness across different studies and patients, guiding decisions on continuing, adjusting, or stopping therapy.