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Assessment of task-based performance from five clinical DBT systems using an anthropomorphic breast phantom

机译：使用拟人化的乳房模型从五个临床DBT系统评估基于任务的绩效

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Purpose: There are currently five FDA approved commercial digital breast tomosynthesis (DBT) systems, all of which have varying geometry and exposure techniques. The aim of this work was to determine if an anthropomorphic breast phantom could be used to systematically compare performance of DBT, full field digital mammography (FFDM) and synthetic mammography (SM) across the systems.Methods: An anthropomorphic breast phantom was created through inkjet printing containing printed masses. The phantom was imaged using automatic exposure control (AEC) settings for that system. Thus, all phantom acquisition settings, and subsequent radiation dose levels, were dictated from the manufacturer settings. A four alternative forced choice reader study was conducted to assess reader performance.Results: Performance in detecting masses was higher with DBT than with FFDM or SM. The difference in proportion correct (PC) was statistically significant for most cases. Additionally, PC of the DBT systems trended with increased gantry span with lowest PC from Hologic and Fuji (both 15°), then both GE systems (25°), and highest for Siemens (50°).Conclusions: A phantom containing masses was imaged on five commercially available DBT systems across 3 states. A 4AFC study was performed to assess performance with FFDM, DBT, and SM across all systems. Overall detection was highest using DBT, with improvement as the gantry span increased. This study is the first of its kind to use an inkjet based physical anthropomorphic phantom to assess performance of all five commercially available breast imaging systems.
机译：目的：目前有五个FDA批准的商业数字化乳房断层合成（DBT）系统，所有这些系统均具有不同的几何形状和曝光技术。这项工作的目的是确定是否可以使用拟人化的乳房幻象来系统比较整个系统中的DBT，全场数字乳房X线照相术（FFDM）和合成乳房X线照相术（SM）的性能。方法：通过喷墨创建拟人化的乳房幻象。包含印刷质量的印刷品。使用该系统的自动曝光控制（AEC）设置为幻像成像。因此，所有幻像采集设置以及随后的辐射剂量水平均由制造商设置决定。进行了四项替代性的强制选择阅读器研究，以评估阅读器性能。结果：DBT检测质量的性能高于FFDM或SM。在大多数情况下，正确比例（PC）的差异具有统计学意义。此外，DBT系统的PC趋势是龙门架间距增加，Hologic和Fuji的PC最低（均为15°），然后是GE系统的25％，而Siemens的PC最高（50°）。在3个州的5个商用DBT系统上成像。进行了4AFC研究，以评估FFDM，DBT和SM在所有系统上的性能。使用DBT时，整体检测最高，随着龙门架跨度的增加而提高。这项研究是首次使用基于喷墨的物理拟人化体模来评估所有五个市售乳房成像系统的性能的同类研究。

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