Clinical Study Of High Frequency Ultrasound Combined With Elastography And Magnetic Resonance Imaging In Diagnosis Of Breast Cancer

Objective:1.To evaluate the value of high frequency ultrasonography in the diagnosis of benign and malignant breast tumors,high frequency ultrasonography,color doppler and spectral doppler imaging were used to analyze the two-dimensional features and hemodynamic features of breast cancer.2.To explore the high frequency ultrasound combined with elastic strain rate(Strain rate,SR)value ratio method of diagnosis of benign and malignant breast tumors,and construct the receiver operating characteristic curve(Receiver operator characteristic curve,ROC)curve,obtain the elastic strain ratio(Elastography strain rate ratio,SRR)the best diagnostic value for clinical reference diagnosis.3.To evaluate the value of magnetic resonance imaging in the diagnosis of benign and malignant breast tumors.4.Contrast the advantages and disadvantages of various examinations,and provide the basis for clinical diagnosis.Materials and methods:Methods a total of 65 patients with breast lesions who underwent breast surgery in our hospital from May 2016 to April 2017 were reviewed and reviewed.A total of 84 lesions were reviewed.Underwent high frequency ultrasound and elastography in all cases before surgery,and underwent enhanced MRI scan,were of benign and malignant lesions were judged,and compared with puncture biopsy or postoperative pathology,analysis of high frequency ultrasound combined with high frequency ultrasound elastography,MRI examination of the clinical value in the diagnosis of breast cancer.Result:1.The mass of the tumor was scanned by high frequency ultrasound,and the size,shape,border and morphological characteristics of the tumor and the hemodynamic characteristics were analyzed.The results showed that the sensitivity,specificity and accuracy of high frequency ultrasonography in diagnosis of breast cancer were 78.4%,72.3% and 75.0% respectively.2.By using the method of high frequency ultrasound combined with elastography,ROC curve,get the area under the curve was 0.892,SRR is the best diagnostic value is 3.01,the accuracy,sensitivity and specificity of diagnosis of breast cancer were 91.9%,89.4%,90.5%.3.Magnetic resonance imaging combined with dynamic enhanced MRI,morphological analysis and time signal intensity curve mass(Time intensity,curve,TIC)characteristics,sensitivity,specificity,accuracy of diagnosis of breast cancer were 94.6%,89.4%,91.7%.4.The sensitivity,specificity and accuracy of high frequency ultrasound alone were lower than those of combined ultrasound in the diagnosis of breast cancer.The difference was not statistically significant in sensitivity(P>0.05),the specificity and accuracy were statistically significant differences(P<0.05);the sensitivity,specificity and accuracy of high frequency ultrasound combined with elastic strain ratio method and MRI in the diagnosis of breast cancer,the difference was not statistically significant(P>0.05).Conclusion:1.The elastic strain rate ratio is an important index to reflect the hardness of breast lesions.Combined with the two-dimensional image features of high-frequency ultrasound and the hemodynamic characteristics of Doppler,the diagnosis rate of breast cancer will be improved.2.In the diagnosis of breast cancer,MRI examination and high frequency ultrasound combined with elastography compared with no obvious advantage.3.High frequency ultrasound combined with elastography in diagnosis of breast cancer is affected by the thickness of the gland and the depth and size of the lesions,so further research is needed in the future.