Using positron emission tomography (PET) scans during induction chemotherapy for esophageal cancer, researchers were able to assess patient response to treatment and adjust their therapy, leading to an improved rate of pathologic complete response prior to surgery.
http://www.cancernetwork.com/asco-2017-gastrointestinal-cancers-symposium/pet-scans-helped-tailor-induction-chemotherapy-esophageal-cancers
PET Scans Helped Tailor Induction Chemotherapy for Esophageal Cancers