Krupinski Elizabeth A, Berger William G, Dallas William J, Roehrig Hans
Department of Radiology, University of Arizona, 1609 N. Warren, Bldg 211, Rm 112, Tucson, AZ 85724, USA.
Acad Radiol. 2003 Aug;10(8):861-8. doi: 10.1016/s1076-6332(03)00055-2.
The goal of the study was to determine whether there are certain physical features of pulmonary nodules that attract visual attention and contribute to increased recognition and detection by observers.
A series of posteroanterior chest images with solitary pulmonary nodules were searched by six radiologists as their eye-position was recorded. The signal-to-noise ratio, size, conspicuity, location, and calcification status were measured for each nodule. Dwell parameters were correlated with nodule features and related to detection rates.
Only nodule size (F = 5.08, P = .0254) and conspicuity (F = 4.625, P = .0329) influenced total dwell time on nodules, with larger, more conspicuous nodules receiving less visual attention than smaller, less conspicuous nodules. All nodule features examined influenced overall detection performance (P < .05) even though most did not influence visual search and attention.
Individual nodule features do not attract attention as measured by "first hit" fixation data, but certain features do tend to hold attention once the nodule has been fixated. The combination of all features influences whether or not it is detected.
本研究的目的是确定肺结节是否存在某些吸引视觉注意力并有助于观察者提高识别和检测能力的物理特征。
六位放射科医生在记录其眼位的同时，对一系列带有孤立性肺结节的后前位胸部图像进行搜索。测量每个结节的信噪比、大小、显眼程度、位置和钙化状态。注视参数与结节特征相关，并与检测率相关。
仅结节大小（F = 5.08，P = 0.0254）和显眼程度（F = 4.625，P = 0.0329）影响对结节的总注视时间，较大、较显眼的结节比较小、较不显眼的结节受到的视觉关注更少。尽管大多数结节特征不影响视觉搜索和注意力，但所检查的所有结节特征均影响总体检测性能（P < 0.05）。
根据“首次命中”注视数据测量，单个结节特征不会吸引注意力，但某些特征在结节被注视后确实倾向于保持注意力。所有特征的组合会影响其是否被检测到。
