Breast Lesions Evaluated by Color-Coded Acoustic Radiation Force Impulse (ARFI) Imaging

Area of Science:

• Radiology
• Medical Imaging
• Biophysics

Background:

• Accurate characterization of breast lesions is crucial for timely diagnosis and treatment.
• Conventional ultrasound (US) has limitations in differentiating benign from malignant breast masses.
• Advanced imaging techniques are needed to improve diagnostic performance.

Purpose of the Study:

• To evaluate the efficacy of color-coded Virtual Touch tissue imaging (VTI) using acoustic radiation force impulse (ARFI) technology for breast lesion characterization.
• To compare the diagnostic performance of VTI with conventional US.
• To assess the combined utility of VTI and conventional US.

Main Methods:

• Conventional US and color-coded VTI were performed on 196 solid breast lesions in 196 women.
• A four-point scale VTI score was assigned based on the color pattern of the lesion and surrounding tissue.
• Receiver operating characteristic (ROC) curve analysis was used to evaluate diagnostic performance.

Main Results:

• Mean VTI scores were significantly higher for malignant lesions (3.80) compared to benign lesions (2.02) (p < 0.001).
• The area under the ROC curve for the combined approach (US + VTI) was 0.945, outperforming conventional US (0.902) and VTI alone (0.871).
• An optimal cut-off value for VTI score was identified between 3 and 4.

Conclusions:

• Color-coded VTI, particularly with a four-point scale scoring system, shows potential in aiding breast lesion characterization.
• The combination of VTI and conventional US offers improved diagnostic accuracy over either method alone.
• This advanced imaging technique may assist clinicians in differentiating benign from malignant breast lesions.