The choice of imaging technique depends on the type of cancer, its location, and the clinical scenario: - MRI: Recommended for brain tumors, spinal cord tumors, soft tissue sarcomas, and when detailed soft tissue imaging is required. - CT: Often the first choice for lung, abdominal, and pelvic cancers, as well as for evaluating bone metastases. - PET: Used for staging cancers like lymphoma, lung cancer, and melanoma, and for assessing treatment response and detecting recurrences.