Ultrasonic Elastography Strain Rate Ratio Combined with MRI in Diagnosis of Breast Tumor
10.3969/j.issn.1005-5185.2015.12.006
- VernacularTitle:超声弹性应变率比值联合磁共振成像对乳腺肿物的诊断
- Author:
Weiping YANG
;
Bin LIAN
;
Zhanling DING
;
Yan HUANG
;
Hang LI
;
Guanqiao JIN
;
Changyuan WEI
- Publication Type:Journal Article
- Keywords:
Breast neoplasms;
Ultrasonography,mammary;
Elasticity imaging techniques;
Magnetic resonance imaging;
Pathology,surgical
- From:
Chinese Journal of Medical Imaging
2015;(12):900-904
- CountryChina
- Language:Chinese
-
Abstract:
PurposeTo evaluate the significance of ultrasonic elastography strain ratio, MRI and the combination of both in diagnosis of breast tumor.Materials and MethodsFifty-four cases with single breast tumor underwent preoperative ultrasound elasticity imaging and MRI. Accuracy of ultrasound elastography strain rate ratio (SRR) of the tumor and surrounding normal breast tissue was measured by quantitative ultrasound elastography, and its combination with MRI were analyzed. ResultsThere was signiifcant differences on SRR between the benign group and the malignant group (2.24±1.28vs 4.96±1.73, t=2.648,P<0.05). Optimal threshold of ultrasonic elastography SRR in differential diagnosis of breast benign from malignant tumor was 2.41 determined by ROC curve. The accuracy of SRR, MRI and the combination of both in differentiating benign from malignant breast tumor was 81.48% (44/54), 85.19% (46/54) and 96.30%(52/54), respectively. There was no statistic difference between SRR and MRI in diagnostic accuracy (χ2=0.267,P>0.05). Combined both had higher diagnosis accuracy when compared with SR and MRI separately (χ2=6.000 and 3.967,P<0.05).Conclusion Ultrasonic elastography strain ratio is accurate and objective in differentiating benign from malignant breast tumors. It is a valuable quantitative index in clinical practice. Moreover, SRR combined with MRI can reduce the misdiagnosis rate.
