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- W3031475660 abstract "Objective To investigate the discriminant analysis model of gray-scale ultrasound (GSUS),contrast-enhanced ultrasound (CEUS) and the combination of them in the differential diagnosis of benign and malignant thyroid lesions and the diagnostic values.Methods Ultrasound images of 211 thyroid lesions confirmed by pathology were synthetically reviewed by scoring 5 GSUS indicators including shape (X1),orientation (X2),interior echogenicity (X3),halo sign (X4),and microcalcification (X5),as well as 6 CEUS indicators including relative arrival time of microbubhles in the periphery (X6) and interior (X7),peak periphery (X8) and interior (X9)echogenicity,peripheral ring-enhancement (X10),homogeneity of enhancement (X11).The diagnostic models with their values of GSUS,CEUS and the combination of them were explored by discriminant analysis.Results The discriminant analysis function of GSUS in the diagnosis of thyroid benign and malignant lesions was g1 (X) =0.715 X1+0.276X2 + 1.028X3 +1.197X4 +0.923X5-2.202 with the diagnostic value 86.3％,the discriminant analysis function of CEUS was g2(X) =-0.392X6 +0.541X7-0.117X8 +0.562X9 + 1.173X10 +2.200X11-1.956 with the diagnostic value 89.1％,and the discriminant analysis function of the combination of GSUS and CEUS was g3 (X) =0.418X1 + 0.173X2 + 0.626X3 + 0.558X4 + 0.183X5-0.476X6 + 0.474X7-0.071X8 + 0.399X9 + 0.985X10 +1.639X11-2.530 with the diagnostic value 91.0％.Conclusions GSUS and CEUS were valuable in the differential diagnosis of benign and malignant thyroid lesions,and the combination of GSUS and CEUS was most valuable.Key words: Thyroid ; Ultrasound ; Contrast-enhanced ultrasound ; Diagnostic model" @default.
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- W3031475660 date "2013-07-25" @default.
- W3031475660 modified "2023-09-24" @default.
- W3031475660 title "Modeling gray-scale and contrast-enhanced ultrasound in the diagnosis of thyroid lesions" @default.
- W3031475660 doi "https://doi.org/10.3760/cma.j.issn.1000-6699.2013.07.003" @default.
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