Characterization of radiologists' search strategies for lung nodule detection: slice-based versus volumetric displays.
Characterization of radiologists' search strategies for lung nodule detection: slice-based versus volumetric displays.
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放射科医生肺结节检测搜索策略的特征：基于切片与体积显示。
DOI：
10.1007/s10278-007-9076-x
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发表时间：
2008
影响因子：
4.4
通讯作者：
Good,WalterF
中科院分区：
文献类型：
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作者：
Wang,XiaoHui;Durick,JanetE;Lu,Amy;Herbert,DavidL;Golla,SaraswathiK;Foley,Kristin;Piracha,CSamia;Shinde,DilipD;Shindel,BettyE;Fuhrman,CarlR;Britton,CynthiaA;Strollo,DianeC;Shang,SherryS;Lacomis,JoanM;Good,WalterF
本研究的目的是评估放射科医生在不同渲染和显示方案之间进行胸部计算机断层扫描 (CT) 肺结节检测的搜索路径是否具有可靠的属性，可以将其用作人体工程学效率的指标，以比较不同的显示范例。 8 名放射科医生回顾性观看了 30 份肺癌筛查 CT 检查，共包含 91 个结节，分别以三种显示模式（即逐层、正交最大强度投影 (MIP) 和立体）显示，以检测和分类肺结节。放射科医生在轴向方向的搜索模式被记录并分析，以及每个检测到的特征的位置、大小和形状，以及该特征是实际结节的可能性。通过采用自由响应接收器操作特性方法来分析结节检测性能。逐层显示和体积显示之间的搜索路径明显不同，但除了训练和新奇效果之外，MIP 和立体显示之间没有差异。新颖性和训练效果与立体显示模式相关，研究开始和结束之间的差异证明了这一点。与研究中测试的其他显示模式相比，立体显示提供了更高的检测和分类性能，并且解释时间更短；然而，差异没有统计学意义。我们的初步结果表明，放射科医生的搜索路径在评估不同显示范例的相对人体工程学效率方面具有潜在作用，但在对搜索策略进行有意义的比较之前，需要系统的培训和实践来消除训练曲线和新颖性效应。
The goal of this study was to assess whether radiologists’ search paths for lung nodule detection in chest computed tomography (CT) between different rendering and display schemes have reliable properties that can be exploited as an indicator of ergonomic efficiency for the purpose of comparing different display paradigms. Eight radiologists retrospectively viewed 30 lung cancer screening CT exams, containing a total of 91 nodules, in each of three display modes [i.e., slice-by-slice, orthogonal maximum intensity projection (MIP) and stereoscopic] for the purpose of detecting and classifying lung nodules. Radiologists’ search patterns in the axial direction were recorded and analyzed along with the location, size, and shape for each detected feature, and the likelihood that the feature is an actual nodule. Nodule detection performance was analyzed by employing free-response receiver operating characteristic methods. Search paths were clearly different between slice-by-slice displays and volumetric displays but, aside from training and novelty effects, not between MIP and stereographic displays. Novelty and training effects were associated with the stereographic display mode, as evidenced by differences between the beginning and end of the study. The stereo display provided higher detection and classification performance with less interpretation time compared to other display modes tested in the study; however, the differences were not statistically significant. Our preliminary results indicate a potential role for the use of radiologists’ search paths in evaluating the relative ergonomic efficiencies of different display paradigms, but systematic training and practice is necessary to eliminate training curve and novelty effects before search strategies can be meaningfully compared.