[¹¹C] choline as a potential PET/CT biomarker of liver cirrhosis: A prospective pilot study.

Abstract Aim of the study To compare [¹¹C] choline PET/CT findings between patients with cirrhosis and normal liver controls. Methods Included 11 patients with cirrhosis and 14 controls. All underwent a dynamic [11C] choline PET/CT. The maximal standard uptake values (SUVmax), the area under the curve (AUC) and kinetic parameters (K1 and K2), clinical and laboratory data, were compared between groups. Results Patients mean age was 68.4 ± 10.7 and controls, 69.7 ± 7.3 years. Mean SUVmax was higher in patients than controls (right lobe, 10.06 ± 12 vs. 6.3 ± 1.6, P = 0.011; left lobe, 8.6 ± 11.6 vs. 5.4 ± 0.9, P = 0.024; spleen 17.99 ± 27.8 vs. 13.4 ± 2.6, P = 0.027; kidney, 35.9 ± 59.5 vs. 19.3 ± 4.8, P = 0.025) and also AUC values (right lobe, 13,538 ± 20,020 vs. 8427.3 ± 1557.9, P = 0.026; left lobe 12,304 ± 18,871 vs. 6878.9 ± 1294.3, P = 0.024; spleen, 12,875 ± 17,930 vs. 8263.9 ± 1279.2, P = 0.023; kidney, 24,623 ± 36,025 vs. 13,667 ± 3873.9, P = 0.032). No difference in kinetic parameters was found. No correlations between severity of clinical signs and imaging-derived parametric data were found among patients with cirrhosis. Conclusions [11C] choline PET/CT may serve as a noninvasive biomarker for patients with cirrhosis.