01-07-2016 | Review Article
Acquisition with 11C-choline and 18F-fluorocholine PET/CT for patients with biochemical recurrence of prostate cancer: a systematic review and meta-analysis
Published in: Annals of Nuclear Medicine | Issue 6/2016
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The objective of the systematic review and meta-analysis was to evaluate whether the choice between two radiotracers, 11C-choline (11C-cho) and 18F-fluorocholine (18F-FCH) for PET/CT, and different acquisition protocols contributed to detect metastases for patients with biochemical recurrence of prostate cancer after radical prostatectomy or radiotherapy. We searched in January 2016 in Pubmed and Embase for articles that had used radiolabeled choline PET/CT in restaging. The meta-analysis evaluated technical and clinical aspects. Across 18 articles 1 219 of 2 213 patients (54.9 %) had a positive radiolabeled PET/CT image. Mean of the mean/median restaging PSA levels was 3.6 ± 2.7 ng/mL (range 0.5–10.7 ng/mL). Six articles with 11C-cho PET/CT had a radiation activity of 561 ± 122 MBq and it was 293 ± 47 MBq in 12 articles with 18F-FCH PET/CT. The difference was significant (P = 0.007, t test). Uptake time was 5 min in articles with 11C-cho PET/CT and it was 29 ± 24 min in articles with 18F-FCH PET/CT. The difference was significant (P = 0.02, t test). Thereby the detection rates of metastatic sites in articles with 11C-cho (30 ± 5 %) and 18F-FCH (39 ± 5 %) did not differ significantly (P = 0.26, t test). In linear regression analyses of the articles, the radiation activity of 11C-cho and 18F-FCH was not significantly associated with the detection rate of metastatic sites (P = 0.75 and P = 0.60). Restaging with radiolabeled choline PET/CT detected metastatic sites for patients with biochemical recurrence and PSA levels of 1–10 ng/mL at clinically relevant level. The choice between the two choline radiotracers and different acquisition protocols had no significant impact on detection.