Journal of ovarian research · 2014
The effectiveness of dual-phase 18F-FDG PET/CT in the detection of epithelial ovarian carcinoma: a pilot study.
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Lee Jae Kwan, Min Kyung-Jin, So Kyeong A, Kim Sungeun, Hong Jin Hwa
Аннотация
BACKGROUND: The aim of our study is to establish the potential role of dual-phase 18F-fluorodeoxyglucose positron emission tomography / computed tomography (FDG-PET/CT) in patients presenting ovarian masses with diffuse peritoneal infiltration for differentiating benign from malignant lesions.
METHODS: Twenty patients (13 with ovarian cancers and 7 with benign lesions) were evaluated preoperatively by dual-phase 18F-FDG-PET/CT performed 1 h and 2 h after injection of 18F-FDG. The maximum standardized uptake value (SUVmax) for both time points SUVmax1 and SUVmax2 were determined, respectively, and the retention index (RI) was calculated by subtracting the SUVmax1 from the SUVmax2 and dividing by SUVmax1.
RESULTS: The areas under the receiver operating characteristic curves (AUCs) of SUVmax1 and SUVmax2 were 0.753 (P = 0.062, 95% confidence interval [CI] = 0.512-0.915) and 0.835 (P = 0.001, 95% CI = 0.604-0.961), respectively. The AUC of the RI was 0.901 (P < 0.001, 95% CI = 0.684-0.988). Using pairwise comparisons, the AUC of SUVmax2 was significantly higher than that of SUVmax1 (P = 0.032). The AUC of the RI was higher than those of SUVmax1 and SUVmax2, but the difference was not statistically significant.
CONCLUSION: Dual-phase 18F-FDG PET/CT might be considered when preoperative imaging is indeterminate. A larger-scaled, prospective study is needed to verify these results.
METHODS: Twenty patients (13 with ovarian cancers and 7 with benign lesions) were evaluated preoperatively by dual-phase 18F-FDG-PET/CT performed 1 h and 2 h after injection of 18F-FDG. The maximum standardized uptake value (SUVmax) for both time points SUVmax1 and SUVmax2 were determined, respectively, and the retention index (RI) was calculated by subtracting the SUVmax1 from the SUVmax2 and dividing by SUVmax1.
RESULTS: The areas under the receiver operating characteristic curves (AUCs) of SUVmax1 and SUVmax2 were 0.753 (P = 0.062, 95% confidence interval [CI] = 0.512-0.915) and 0.835 (P = 0.001, 95% CI = 0.604-0.961), respectively. The AUC of the RI was 0.901 (P < 0.001, 95% CI = 0.684-0.988). Using pairwise comparisons, the AUC of SUVmax2 was significantly higher than that of SUVmax1 (P = 0.032). The AUC of the RI was higher than those of SUVmax1 and SUVmax2, but the difference was not statistically significant.
CONCLUSION: Dual-phase 18F-FDG PET/CT might be considered when preoperative imaging is indeterminate. A larger-scaled, prospective study is needed to verify these results.
Предметные рубрики MeSH
AgedAged, 80 and overArea Under CurveCarcinoma, Ovarian EpithelialDiagnosis, DifferentialFemaleFluorodeoxyglucose F18HumansMiddle AgedMultimodal ImagingNeoplasm InvasivenessNeoplasms, Glandular and EpithelialOvarian NeoplasmsPeritoneal NeoplasmsPilot ProjectsPositron-Emission TomographyPredictive Value of TestsProspective StudiesROC CurveRadiopharmaceuticalsTomography, X-Ray ComputedTumor BurdenWhole Body Imaging