乳腺病变DWI不同指数模型的研究进展

Progress in the application of different DWI exponential models for breast lesions

磁共振扩散加权成像(diffusion weighted imaging,DWI)因其无创、可视、定量反映组织微观结构的改变而被广泛应用于临床。随着DWI各种指数模型包括单指数模型、双指数模型及拉伸指数模型研究的深入、扫描方案的优化以及后处理功能的开发,为乳腺癌的早期发现、鉴别诊断以及辅助治疗疗效和预测评估提供了更多的影像学依据。本文旨在对各指数模型在乳腺方面的研究现况作一综述,以期提高DWI在乳腺病变诊断价值方面的认识。

DWI is widely used in clinic because of its noninvasive,visual and quantitative reflection of tissue microstructure.With the development of DWI exponential model,including monoexponential model,biexponential model and stretched exponential model,scanning scheme optimization and development of postprocessing function,it provides more imaging evidence for early detection,differential diagnosis,adjuvant therapy and predictive evaluation of breast cancer.The purpose of this article is to review the current status of the index models in the mammary gland,in order to improve the understanding of the value of DWI in the diagnosis of breast lesions.