ObjectiveTo investigate the clinical application value of virtual touch image quantification（VTIQ）in differentiating benign and malignant breast solid lesions.MethodsA total of 238 patients with breast mass diagnosed by needle biopsy or surgical pathology in our hospital were selected

including 254 solid breast lesions（148 benign lesions and 106malignant lesions）.VTIQ imaging velocity pattern

the maximum shear wave velocity（Vmax）

minimum shear wave velocity（Vmin）

and average shear wave velocity（Vmean）of breast lesions were detected by VTIQ.Receiver operating characteristic（ROC）curve was drawn to analyze the diagnostic efficacy of Vmax

Vmin and Vmean in differentiating benign and malignant breast lesions.ResultsIn VTIQ imaging

the color coding speed mode of breast solid masses could be divided into 5 types

including 56 lesions were homogeneous type（54 benign and 2 malignant）

79 lesions were homogeneous type（74 benign masses and 5 malignant masses）

72 lesions were clutter type 7（17 benign and 55 malignant）

33 lesions were diffusion type（5 benign and 28 malignant）

14 lesions were hard ring（1 benign and 13 malignant）.The cut-off values of Vmax

Vmin and Vmean in differentiating benign and malignant breast lesions were 5.66 m/s

3.53 m/s and 4.84 m/s

respectively.The corresponding sensitivity

specificity and accuracy were 77.4%

91.9%

85.8%

90.6%

87.1%

88.6%

84.0%

93.2%

89.4%

respectively.The area under the ROC curve of Vmax

Vmin and Vmean were 0.937

0.930 and 0.973

and the difference was not statistically significant.ConclusionVTIQ can be used in the diagnosis of benign and malignant breast solid lesions

and the Vmax

Vmin

Vmean have good diagnostic efficiency.