PMID- 27408877 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20160713 LR - 20201001 IS - 2322-5718 (Print) IS - 2322-5726 (Electronic) IS - 2322-5718 (Linking) VI - 3 IP - 1 DP - 2015 Winter TI - (11)C-Choline and FDG PET/CT Imaging of Primary Cholangiocarcinoma: A Comparative Analysis. PG - 18-25 AB - OBJECTIVES: This study aimed to compare the diagnostic values of (11)C-choline and (18)F-fluorodeoxyglucose ((18)F-FDG) positron emission tomography/computed tomography (PET/CT) in patients with cholangiocarcinoma (CCA). METHODS: This prospective study was conducted on 10 patients (6 males and 4 females), aged 42-69 years, suspected of having CCA based on CT or magnetic resonance imaging (MRI) results. (11)C-choline and (18)F-FDG PET/CT studies were performed in all patients over 1 week. PET/CT results were visually analyzed by 2 independent nuclear medicine physicians and quantitatively by calculating the tumor-to-background ratio (T/B). RESULTS: No (11)C-choline PET/CT uptake was observed in primary extrahepatic or intrahepatic CCA cases. Intense (18)F-FDG avidity was detected in the tumors of 8 patients (%80). Two patients, who were (18)F-FDG negative, had primary extrahepatic CCA. Ki-67 measurements were positive in all patients (range; 14.2%-39.9%). The average T/B values of (11)C-choline and (18)F-FDG were 0.4+/-0.2 and 2.0+/-1.0 in all cases of primary CCA, respectively; these values were significantly lower for (11)C-choline (P<0.005). Both FDG and (11)C-choline PET/CT detected metastatic CCA foci in all 8 patients (two patients had no metastases). CONCLUSION: As the results suggested, primary CCA lesions showed a poor avidity for (11)C-choline, whereas (18)F-FDG PET/CT was of value for the detection of most primary CCA cases. In contrast to primary lesions, metastatic CCA lesions showed (11)C-choline avidity. FAU - Chotipanich, Chanisa AU - Chotipanich C AD - National Cyclotron and PET Centre, Chulabhorn Hospital, Thailand. FAU - Promteangtrong, Chetsadaporn AU - Promteangtrong C AD - National Cyclotron and PET Centre, Chulabhorn Hospital, Thailand. FAU - Kunawudhi, Anchisa AU - Kunawudhi A AD - National Cyclotron and PET Centre, Chulabhorn Hospital, Thailand. FAU - Chanwat, Rawisak AU - Chanwat R AD - Surgery Department, Chulabhorn Hospital, Thailand. FAU - Sricharunrat, Thaniya AU - Sricharunrat T AD - Pathology Department, Chulabhorn Hospital, Thailand. FAU - Suratako, Savitree AU - Suratako S AD - National Cyclotron and PET Centre, Chulabhorn Hospital, Thailand. FAU - Wongsa, Paramest AU - Wongsa P AD - National Cyclotron and PET Centre, Chulabhorn Hospital, Thailand. LA - eng PT - Journal Article PL - Iran TA - Asia Ocean J Nucl Med Biol JT - Asia Oceania journal of nuclear medicine & biology JID - 101611092 PMC - PMC4937685 OTO - NOTNLM OT - Cholangiocarcinoma OT - Choline OT - FDG OT - PET/CT OT - Radiotracer EDAT- 2015/01/01 00:00 MHDA- 2015/01/01 00:01 PMCR- 2015/12/01 CRDT- 2016/07/14 06:00 PHST- 2016/07/14 06:00 [entrez] PHST- 2015/01/01 00:00 [pubmed] PHST- 2015/01/01 00:01 [medline] PHST- 2015/12/01 00:00 [pmc-release] AID - AOJNMB-3-18 [pii] PST - ppublish SO - Asia Ocean J Nucl Med Biol. 2015 Winter;3(1):18-25.