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Both constrast-enhanced computed tomography (ceCT) and 18F-Fluorodeoxyglucose positron emission tomography (PET) are widely used for evaluation of colorectal cancer. Not infrequently patients undergo both tests, increasing cost and radiation burden. Whether this combination provides useful incremental diagnostic information remains unclear. Our purpose was to determine whether the addition of ceCT to PET/CT results in an appropriate change in the N or M stage in patients with colorectal cancer.

european journal of hybrid imaging

Does addition of a diagnostic contrast-enhanced CT to a contemporaneous PET/CT provide incremental value in patients for restaging of colorectal carcinoma?