Comparison of Standardized Uptake Value-Based Positron Emission Tomography and Computed Tomography Target Volumes in Esophageal Cancer Patients Undergoing Radiotherapy

Regardless of the SUV thresholding method used (i.e., absolute or relative to liver mean), a threshold of approximately 2.5 yields the highest conformality index and best approximates the CT-based GTV at the epicenter. These findings may ultimately aid radiation oncologists in the delineation of the entire GTV in esophageal cancer patients.