Fig. 1

Patient-based PET/CT outcome and CRC recurrence in relation to time since the last postoperative imaging. The population was subdivided into five groups: <3 months since imaging (n = 22), 3–6 months since imaging (n = 14), 6–12 months since imaging (n = 15), >12 months since imaging (n = 12) and no postoperative imaging (n = 10). White boxes: PET/CT-positive, black boxes: Verified CRC recurrence