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- Title
Comparative Study of Amide Proton Transfer-Weighted Imaging and Intravoxel Incoherent Motion Imaging in Breast Cancer Diagnosis and Evaluation.
- Authors
Meng, Nan; Wang, Xue‐Jia; Sun, Jing; Huang, Ling; Wang, Zhe; Wang, Kai‐Yu; Wang, Jing; Han, Dong‐Ming; Wang, Mei‐Yun; Wang, Xue-Jia; Wang, Kai-Yu; Han, Dong-Ming; Wang, Mei-Yun
- Abstract
<bold>Background: </bold>Amide proton transfer-weighted imaging (APTWI) and intravoxel incoherent motion imaging (IVIM) are valuable MRI techniques applied to cancer.<bold>Purpose: </bold>To compare APTWI and IVIM in the diagnosis of benign and malignant breast lesions and to evaluate the correlations between different parameters (MTRasym [3.5 ppm], D, D*, and f) and prognostic factors for breast cancer.<bold>Study Type: </bold>Retrospective.<bold>Population: </bold>In all, 123 breast lesions were studied before treatment, including 58 benign lesions and 65 malignant lesions.<bold>Field Strength/sequence: </bold>Conventional MRI (T1 WI, T2 WI, and diffusion-weighted imaging [DWI]), APTWI, and IVIM MRI at 3T.<bold>Assessment: </bold>The magnetization transfer ratio asymmetry at 3.5 ppm (MTRasym [3.5 ppm]), diffusion coefficient (D), pseudo diffusion coefficient (D*), and perfusion fraction (f) values were compared between the benign and malignant groups and between groups with different expression levels of prognostic factors.<bold>Statistical Tests: </bold>Individual sample t-test, χ2 test, Spearman correlation, logistic regression, and the Delong test.<bold>Results: </bold>The D and MTRasym (3.5 ppm) values of the malignant group were lower than those of the benign group; however, D* and f values were higher than those of the benign group (all P < 0.05). The areas under the curve (AUCs) of D, MTRasym (3.5 ppm), D*, and f were 0.809, 0.778, 0.670, and 0.766, respectively; however, only the difference between AUC (D) and AUC (D*) was significant (Z = 2.374, P < 0.05). The D value showed a low correlation with the pathological grade and Ki-67 expression (| r | = 0.294, 0.367); the f value showed a low correlation with estrogen receptor (ER) expression (| r | = 0.382); and the MTRasym (3.5 ppm) value showed a low correlation with pathological grade (| r | = 0.371).<bold>Data Conclusion: </bold>This analysis revealed that both IVIM and APTWI could be used for the differential diagnosis of benign and malignant breast lesions, and APTWI-derived MTRasym (3.5 ppm), IVIM-derived D, D*, and f values showed correlations with some prognostic factors for breast cancer.<bold>Level Of Evidence: </bold>2 TECHNICAL EFFICACY STAGE: 2 J. Magn. Reson. Imaging 2020;52:1175-1186.
- Subjects
CANCER diagnosis; BREAST imaging; MAGNETIZATION transfer; PROTONS; DIFFUSION magnetic resonance imaging; FIBROADENOMAS
- Publication
Journal of Magnetic Resonance Imaging, 2020, Vol 52, Issue 4, p1175
- ISSN
1053-1807
- Publication type
journal article
- DOI
10.1002/jmri.27190