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- W2912085183 abstract "Objectives The aim of this study was to investigate whether the accuracy of multislice contrast-enhanced computed tomography (MS-CECT) may be improved by performing additional subtraction CT. Materials and Methods Thirty-five microwave ablations were performed under CT guidance in 12 healthy and anesthetized pigs. Preablation and postablation MS-CECT scans were obtained in arterial and venous contrast phases. These scans were reconstructed and subtracted from each other. Lesion size was measured in a region of interest drawn around the ablation area. Computed tomography measurements were compared with standardized macroscopic images of explanted liver tissue, obtained immediately after ablation. Paired correlation and Bland-Altman analyses were performed for assessing agreement between modalities and ratings. Results The correlation between lesion size measured in CT and histology was very strong for subtracted images (r = 0.91; 95% confidence interval [CI], 0.8–0.96) and strong for standard MS-CECT images (r = 0.85; 95% CI, 0.68–0.93). Interrater agreement for all measurements was excellent (intraclass correlation coefficient, 0.99; 95% CI, 0.98–0.99 for subtraction and intraclass correlation coefficient, 0.99; 95% CI, 0.98–1.00 for MS-CECT). All differences were statistically significant (P < 0.05). Conclusions Subtraction CT was superior to nonsubtracted MS-CECT in measurement of liver lesion size after microwave ablation in a porcine model, achieving a very strong correlation with pathologic measurement and a significantly lower overestimation of lesion size compared with MS-CECT." @default.
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- W2912085183 date "2019-06-01" @default.
- W2912085183 modified "2023-10-01" @default.
- W2912085183 title "Instant Outcome Evaluation of Microwave Ablation With Subtraction CT in an In Vivo Porcine Model" @default.
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- W2912085183 doi "https://doi.org/10.1097/rli.0000000000000545" @default.
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