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Chinese Journal of Breast Disease(Electronic Edition) ›› 2016, Vol. 10 ›› Issue (03): 155-160. doi: 10.3877/cma.j.issn.1674-0807.2016.03.007

• Original Articles • Previous Articles     Next Articles

Abbreviated protocol of magnetic resonance imaging for detecting breast cancer in dense breasts

Shuangqingi Chen,1(), Min Huang1, Yuying Shen1, Qing Cai1, Chuanxiao Xu1, Chenlu Liu1, Xiaohu You1   

  1. 1.Department of Radiology, Suzhou Hospital, Nanjing Medical University, Suzhou 215001, China
  • Received:2015-10-29 Online:2016-06-01 Published:2024-12-09
  • Contact: Shuangqingi Chen

Abstract:

Objective

To evaluate the application of an abbreviated protocol (AP) of MRI for detecting breast cancer in patients with dense breast tissue.

Methods

In this study, we retrospectively analyzed the clinical data of patients in Suzhou Hospital, Nanjing Medical University from September 2014 to June 2015. Totally 172 patients with dense breast tissue screened in mammography (MG) received dynamic contrast-enhanced MRI [AP and full diagnostic protocol (FDP) ] and needle biopsy. AP consisted of the first postcontrast subtraction and the maximum-intensity projection; FDP consisted of all MRI dynamic enhanced images. The sensitivity, specificity, positive likelihood ratio (PLR), negative likelihood ratio (NLR) of MG,AP and FDP for breast cancer detection were calculated in dense breasts. The diagnostic capabilities of the three methods were compared using the receiver operating characteristic (ROC) curve.

Results

Totally 56 cases of breast cancer were detected in 172 patients with dense breasts, including 12 cases of DCIS,37 invasive ductal carcinoma,2 invasive lobular carcinoma, 3 medullary carcinoma and 2 colloid carcinoma.Nineteen cases were detected with breast cancer by MG, 53 cases by AP and 55 cases by FDP, with the sensitivity of 33.9%(19/56),94.6%(53/56) and 98.2% (55/56),the specificity of 49.1% (57/116),79.3% (92/116) and 91.4 % (106/116), PLR of 0.67,4.57 and 11.42, and NLR of 1.35, 0.07 and 0.02, respectively. ROC curves showed that area under the curve was 0.679±0.053 in MG,0.930±0.026 in AP and 0.948±0.023 in FDP, with 95% confidence interval of 0.574-0.784, 0.881-0.980 and 0.900-0.994 respectively. The area under the curve of AP or FDP was significantly by bigger than that of MG (Z=3.031,3.497,bothP<0.050), while no significant difference was found between AP and FDP (Z=1.114,P>0.050).

Conclusion

AP and FDP have higher diagnostic capability for detecting breast cancer in dense breasts compared with MG, and AP may be applied in breast cancer screening.

Key words: Breast neoplasms, Magnetic resonance spectroscopy, Radiography

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