Objective:

To investigate the value of high frequency ultrasound combined with elastic strain rate ratio (SRR) in the diagnosis of benign and malignant breast tumors

and to obtain the best diagnostic value of elastic SRR

so as to provide reference for clinical diagnosis.

Methods:

From May 2016 to April 2017

a total of 84 lesions in 65 patients with breast lesions were analyzed retrospectively. All cases were examined by high frequen

cy ultrasound and elastography before operation

and the benign and malignant tumors were judged and compared with the pathological results after operation.

Results:

The sensitivity

specificity and accuracy of high frequency ultrasonography in the diagnosis of breast cancer were 78.4%

72.3% and 75.0%

respectively. By using high frequency ultrasound combined with elastic SRR

receiver operating characteristic (ROC) curve was obtained. When the area under curve (AUC) was 0.892

the best diagnostic value of SRR was 3.01

and the accuracy

sensitivity and specificity of diagnosis of breast cancer were 91.9%

89.4%

90.5%. The sensitivity

specificity and accuracy of high frequency ultrasound alone were lower than those of combination of high frequency ultrasound and SRR in the diagnosis of breast cancer. The sensitivity was not significantly different (

P

0.05)

but the specificity and accuracy were significantly different (

P

0.05).

Conclusion:

SRR is an important index to reflect the hardness of breast lesions. Combination of two-dimensional image features of high frequency ultrasound and Doppler hemodynamic characteristics could improve the diagnostic rate of breast cancer.