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The aim of this study was to evaluate the clinical value of 18 F-fluorodeoxyglucose ( 18 F-FDG) positron emission tomography/computed tomography (PET/CT) in advanced liver alveolar echinococcosis (LAE) prior to and following autologous liver transplantation (ALT). The biodistribution of lesions in 8 patients was recorded using 18 F-FDG PET/CT prior to and following surgery. The maximum standardized uptake value (SUVmax) of the lesions was also measured and compared with the pathological results. The overall hepatic peri-lesion SUVmax of the patients was 3.57±1.21, and the delayed SUVmax was 4.19±1.70. The diagnostic sensitivity of 18 F-FDG PET/CT in LAE was 91.67%, with a specificity of 60.00% and accuracy of 82.35%. The positive predictive value was 84.62%, and the negative predictive value was 75.00%. SUVmax values of the surviving liver were 1.23±0.78 after 1 month, 1.15±0.67 after 3 months and 0.85±0.35 after 6 months. Compared with normal liver values (0.95±0.19), the 1-month SUVmax was significantly different. The SUVmax in 3 patients with high-lividity lesions was 2.05±0.72, and the delayed SUVmax was 3.15±0.83; 3 months after transplantation, the SUVmax was 1.85±0.62, and the delayed SUVmax was 2.95±0.79, revealing no significant difference. In conclusion, 18 F-FDG PET/CT is effective for determining the biological boundary of LAE and shows important clinical value in determining the metabolic activities of the surviving liver following ALT.

Analysis of the clinical value of 18F-FDG PET/CT in hepatic alveolar echinococcosis before and after autologous liver transplantation