Pilot Prospective Study of Contrast-Enhanced Photon-Counting Detector CT (PCD-CT) for the Local Staging of Rectal Cancer

Inclusion Criteria: * Adult patients 18 to 99 years of age * Patients with proven rectal cancer clinically referred for staging pelvic MRI and contrast-enhanced CT of the abdomen and pelvis (for evaluation of liver and peritoneal disease) * Endoscopic or imaging report that tumor is 2 cm or larger * Patients who are able and willing to sign the informed consent * Negative pregnancy test if subject is of child-bearing age (females of child-bearing potential will be screened for pregnancy using a urine pregnancy test, which will be administered by the unit study coordinator at no cost to the pa…