The Potential Prognostic Value of Dual-Imaging PET Parameters Based on ¹⁸F-FDG and ¹⁸F-OC for Neuroendocrine Neoplasms

Figure 1

Shows the performance of ¹⁸F-FDG and ¹⁸F-OC in three patients. The maximum intensity projection (MIP, a–f) images from the respective PET datasets are shown. Images a, b, g, and j are from a patient with a G1 neuroendocrine tumor that had a NETPET score of P1, indicating that the scans are negative for ¹⁸F-FDG (a and g) and positive for ¹⁸F-OC (b and j) in the liver and abdominal cavity. Images c, d, h, and k are from a patient with a G3 neuroendocrine tumor of the ileocecum and lymph nodes and show that the lesions have greater avidity for ¹⁸F-FDG (c and h) than ¹⁸F-OC (d and k), with a NETPET score of P4b. Images e, f, i, and l are from a patient after rectal G3 neuroendocrine tumor surgery that had a NETPET score of P5, indicating that the scans are negative for ¹⁸F-OC (f and l) and positive for ¹⁸F-FDG (e and i) in the liver.

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