Peppard Heather R, Nicholson Brandi E, Rochman Carrie M, Merchant Judith K, Mayo Ray C, Harvey Jennifer A
From the Department of Medical Imaging and Radiology, University of Virginia Health System, 1 Hospital Dr, PO Box 800170, Charlottesville, VA 22908 (H.R.P., B.E.N., C.M.R., R.C.M., J.A.H.); and Department of Breast Imaging, Women's Diagnostic Center, Louisville, Ky (J.K.M.).
Radiographics. 2015 Jul-Aug;35(4):975-90. doi: 10.1148/rg.2015140204. Epub 2015 May 29.
Digital breast tomosynthesis (DBT) is an emerging technology used in diagnostic breast imaging to evaluate potential abnormalities. In DBT, the compressed breast tissue is imaged in a quasi-three-dimensional manner by performing a series of low-dose radiographic exposures and using the resultant projection image dataset to reconstruct cross-sectional in-plane images in standard mammographic views. Improved visualization of breast detail at diagnostic DBT allows improved characterization of findings, including normal structures and breast cancer. This technology reduces the summation of overlapping breast tissue, which can mimic breast cancer, and provides improved detail of noncalcified mammographic findings seen in breast cancer. It also assists in lesion localization and determining mammographic extent of disease in women with known or suspected breast cancer. The authors review the potential uses, benefits, and limitations of DBT in the diagnostic setting and discuss how radiologists can best use DBT to characterize lesions, localize potential abnormalities, and evaluate the extent of known or suspected breast cancer. The authors' experience shows that DBT can be implemented effectively in the diagnostic workflow to evaluate and localize potential lesions more efficiently. DBT may potentially replace conventional supplemental mammography at diagnostic workup and obviate ultrasonography in select cases.
数字乳腺断层合成（DBT）是一种用于乳腺诊断成像以评估潜在异常的新兴技术。在DBT中，通过进行一系列低剂量X线摄影曝光，并使用所得的投影图像数据集在标准乳腺摄影视图中重建横断面平面内图像，对压缩的乳腺组织进行准三维成像。在诊断性DBT中，乳腺细节的可视化改善使得对包括正常结构和乳腺癌在内的发现能够进行更好的特征描述。这项技术减少了可能模拟乳腺癌的重叠乳腺组织的叠加，并提供了在乳腺癌中所见的非钙化乳腺摄影发现的更清晰细节。它还有助于病变定位，并确定已知或疑似患有乳腺癌的女性的乳腺摄影疾病范围。作者回顾了DBT在诊断环境中的潜在用途、益处和局限性，并讨论了放射科医生如何最好地使用DBT来特征化病变、定位潜在异常以及评估已知或疑似乳腺癌的范围。作者的经验表明，DBT可以有效地应用于诊断工作流程中，以更高效地评估和定位潜在病变。在诊断检查中，DBT可能会在某些情况下取代传统的补充乳腺摄影，并避免使用超声检查。
