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Objective To investigate the elasticity imaging with conventional ultrasound combined with the differential diagnosis of benign and malignant thyroid nodules, help for clinical selection of surgical methods and to guide treatment. The method of application of gray-scale ultrasound, color Doppler ultrasound and elastography checks on 70 patients with a total of 112 patients with thyroid nodules, all nodules were confirmed pathologically confirmed. Observe the site of the nodule, number, size, shape, border, capsule, internal echo, microcalcifications, internal and peripheral blood flow distribution characteristics, peak systolic the speed (PSV), resistance index (RI) and elastography score discussed by many people come to score, the elasticity score by two experienced ultrasound diagnostician Figure marking grading disagreement. All the experimental data were statistically analyzed. 1, thyroid, grayscale ultrasound image characteristics of malignant nodules in shape, boundary, internal echo, envelope and microcalcifications indicators have a significant difference (P lt; 0.01); thyroid benign and malignant nodules Alder flow grade, peak systolic the speed (PSV), resistance index (RI) differences were significant statistically significant (P lt; 0.01); thyroid benign and malignant nodules flexible grading difference was statistically significant (P lt; 0.01). 2, the sensitivity of conventional ultrasound diagnosis of thyroid nodules is 76.47%, specificity 78.21%, 77.68% accuracy; elastography in the diagnosis of thyroid nodules sensitivity of 79.41%, 76.92% specificity, and accuracy of 77.68%; conventional ultrasound elastography combined with a sensitivity of 91.18%, a specificity of 88.46%, 89.29% accuracy. 3, tissue elasticity imaging technology with conventional ultrasound combined with the sensitivity of the differential diagnosis of benign and malignant thyroid nodules (P lt; 0.01), specificity (P lt; 0.05) and accuracy (P lt; 0.05) than those of conventional ultrasound The difference was statistically significant. Conclusion 1, gray-scale ultrasound diagnosis of benign and malignant thyroid nodules, blood flow signal of malignant thyroid nodules than benign nodules, but its grayscale image characteristics and blood flow parameters in benign and malignant nodules overlap, so the judge can not rely solely on a certain indicators, a comprehensive analysis of multiple parameters to improve diagnostic accuracy. Ultrasound elastography can reflect the organization hardness was seized, provide more reference for benign and malignant thyroid nodules diagnosis and differential diagnosis greatly improve the accuracy of diagnosis with conventional ultrasound combined with important clinical value.
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