Application of the diffusion kurtosis model for the study of breast lesions

被引:220
作者
Nogueira, Luisa [1 ]
Brandao, Sofia [2 ]
Matos, Eduarda [3 ]
Nunes, Rita Gouveia [4 ]
Loureiro, Joana [2 ]
Ramos, Isabel [5 ]
Ferreira, Hugo Alexandre [4 ]
机构
[1] Polytech Inst Porto ESTSP IPP, Sch Hlth Technol Porto, Dept Radiol, Rua Valente Perfeito 322, P-4400330 Vila Nova De Gaia, Portugal
[2] Hosp Sao Joao, Dept Radiol, MRI Unit, P-4200319 Oporto, Portugal
[3] Univ Porto, Inst Biomed Sci Abel Salazar ICBAS, Dept Hlth Community, P-4050313 Oporto, Portugal
[4] Univ Lisbon, Fac Sci, IBEB, P-1749016 Lisbon, Portugal
[5] Univ Porto, Fac Med, Hosp Sao Joao, Dept Radiol, P-4200319 Oporto, Portugal
关键词
Diffusion weighted imaging; Diffusion kurtosis imaging; Magnetic resonance imaging; Breast lesions; Mean kurtosis; EXPERIMENTAL-DESIGN; WATER DIFFUSION; MRI; DIFFERENTIATION; QUANTIFICATION; BENIGN;
D O I
10.1007/s00330-014-3146-5
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
100231 [临床病理学]; 100902 [航空航天医学];
摘要
To evaluate diffusion-weighted imaging (DWI) and diffusion kurtosis imaging (DKI) in the differentiation and characterisation of breast lesions. Thirty-six women underwent breast magnetic resonance imaging (MRI) including a DWI sequence with multiple b-values (50-3,000 s/mm(2)). Mean values for apparent diffusion coefficient (ADC), mean diffusivity (MD) and mean kurtosis (MK) were calculated by lesion type and histological subtype. Differences and correlation between parameters were determined. Forty-four lesions were found. There were significant differences between benign and malignant lesions for all parameters (ADC, p = 0.017; MD, p = 0.028; MK, p = 0.017). ADC and MD were higher for benign (1.96 +/- 0.41 x 10(-3) and 2.17 +/- 0.42 x 10(-3) mm(2)/s, respectively) than for malignant lesions (1.33 +/- 0.18 x 10(-3) and 1.52 +/- 0.50 x 10(-3) mm(2)/s). MK was higher for malignant (0.61 +/- 0.27) than benign lesions (0.37 +/- 0.18). We found differences between invasive ductal carcinoma (IDC) and fibroadenoma (FA) for all parameters (ADC, MD and MK): p = 0.016, 0.022 and 0.016, respectively. FA and fibrocystic change (FC) showed differences only in MK (p = 0.016). Diffusion in breast lesions follows a non-Gaussian distribution. MK enables differentiation and characterisation of breast lesions, providing new insights into microstructural complexity. To confirm these results, further investigation in a broader sample should be performed. aEuro cent The diffusion kurtosis model provides new information regarding breast lesions aEuro cent MD and MK are valid parameters to characterise tissue microstructure aEuro cent MK enables improved lesion differentiation aEuro cent MK is able to differentiate lesions that display similar ADC values.
引用
收藏
页码:1197 / 1203
页数:7
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