Comparing search patterns in digital breast tomosynthesis and full-field digital mammography: an eye tracking study
Comparing search patterns in digital breast tomosynthesis and full-field digital mammography: an eye tracking study
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DOI：
10.1117/1.jmi.4.4.045501
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发表时间：
2017-10-01
影响因子：
2.4
通讯作者：
Wolfe, Jeremy M.
中科院分区：
文献类型：
--
作者：
Aizenman, Avi;Drew, Trafton;Wolfe, Jeremy M.
作为一种有前途的成像方式，数字乳腺断层合成摄影（DBT）比传统的全视野数字乳腺X射线摄影（FFDM）具有更好的诊断性能。DBT允许乳房的不同平面可视化，减少重叠组织的阻塞。虽然DBT越来越受欢迎，但在这种媒介中搜索策略的最佳实践尚不清楚。眼动跟踪使我们能够描述放射科医生搜索DBT和FFDM图像所采用的搜索模式。11名放射科医生检查了8例DBT和FFDM病例。观察员用鼠标点击标记可疑的肿块。在1000 Hz下记录眼睛位置，并在放射科医生滚动DBT图像时与切片/深度平面共配准，从而实现眼睛位置的3-D表示。断层扫描病例的肿块命中率高于二维病例，DBT导致假阳性率较低。然而，DBT病例的检索持续时间比FFDM长得多。与FFDM相比，DBT与更长的注视相关，但扫视幅度相似。当将放射科医生的眼球运动与先前的研究进行比较时，该研究跟踪放射科医生阅读胸部CT时的眼球运动，我们发现DBT查看者与先前确定的“钻孔机”或“扫描仪”策略不一致，尽管他们的搜索策略与一种类型的大力钻孔策略最接近。(C)2017年，摄影光学仪器工程师协会（SPIE）
As a promising imaging modality, digital breast tomosynthesis (DBT) leads to better diagnostic performance than traditional full-field digital mammograms (FFDM) alone. DBT allows different planes of the breast to be visualized, reducing occlusion from overlapping tissue. Although DBT is gaining popularity, best practices for search strategies in this medium are unclear. Eye tracking allowed us to describe search patterns adopted by radiologists searching DBT and FFDM images. Eleven radiologists examined eight DBT and FFDM cases. Observers marked suspicious masses with mouse clicks. Eye position was recorded at 1000 Hz and was coregistered with slice/depth plane as the radiologist scrolled through the DBT images, allowing a 3-D representation of eye position. Hit rate for masses was higher for tomography cases than 2-D cases and DBT led to lower false positive rates. However, search duration was much longer for DBT cases than FFDM. DBT was associated with longer fixations but similar saccadic amplitude compared with FFDM. When comparing radiologists' eye movements to a previous study, which tracked eye movements as radiologists read chest CT, we found DBT viewers did not align with previously identified "driller" or "scanner" strategies, although their search strategy most closely aligns with a type of vigorous drilling strategy. (C) 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)