FDG PET/CT as a Prognostic Test After 90Y Radioembolization in Patients With Metastatic Hepatic Disease
ABSTRACTThe purpose of this study was to determine FDG PET/CT utility in predicting patient outcome undergoing Y RE for metastatic liver tumors.Thirty-one patients with metastatic tumors to the liver underwent Y RE between March 15, 2007, and May 5, 2011, at our institution. FDG PET/CT imaging was p...
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Veröffentlicht in: | Clinical nuclear medicine 2012-09, Vol.37 (9), p.862-865 |
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Sprache: | eng |
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Zusammenfassung: | ABSTRACTThe purpose of this study was to determine FDG PET/CT utility in predicting patient outcome undergoing Y RE for metastatic liver tumors.Thirty-one patients with metastatic tumors to the liver underwent Y RE between March 15, 2007, and May 5, 2011, at our institution. FDG PET/CT imaging was performed on each patient within 3 months before and after undergoing Y RE. Pretreatment and posttreatment FDG PET/CT were evaluated for SUV, number of liver lesions, and presence of disease outside the liver. The Kaplan-Meier method and Cox proportional hazard modeling was used to evaluate if SUV was a predictor of overall survival.Of the 31 patients, 12 were alive at the end of the study; median survival was 9 months (95% confidence interval, 7–18 months). The 24-month survival rate was 0.28 (95% confidence interval, 0.12–0.48). Kaplan-Meier analysis of preprocedure FDG PET/CT imaging showed no difference in rates of survival by number of lesions observed in the liver (P = 0.114) or presence of disease observed outside the liver (P = 0.719). Cases with new lesions outside the liver after treatment had significantly shorter survival times than cases without new lesions outside the liver (P = 0.002). Cox proportional hazard model showed that SUV levels before and after treatment were not significant predictors of overall survival.The appearance of new lesions outside the liver on FDG PET/CT within 3 months after Y RE was the only statistically significant variable in predicting poor outcome. Absence of new lesions outside the liver on postprocedure FDG PET/CT imaging helps identify patients achieving long-term survival. |
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ISSN: | 0363-9762 1536-0229 |
DOI: | 10.1097/RLU.0b013e318262af7f |