Table 3. Diagnostic performance of strain ratio and Doppler indices in differentiating benign and malignant breast lesions.

HPE: Histopathological examination; PI: pulsatility index; RI: resistance index.

Variables	Values	Frequency	HPE		Sensitivity	Specificity	Positive predictive value	Negative predictive value	Diagnostic accuracy
			Benign	Malignant
Strain ratio	<3	46	45	1	75%	97.83%	75%	97.83%	96%
	>3	4	1	3
Doppler PI	<1	45	44	1	75%	95.65%	60%	97.78%	94%
	>1	5	2	3
Doppler RI	<0.8	45	44	1	75%	95.65%	60%	97.78%	94%
	>0.8	5	2	3