Hu C H, Kundel H L, Nodine C F, Krupinski E A, Toto L C
Department of Radiology, University of Pennsylvania, Philadelphia 19104-6086, USA.
Acad Radiol. 1994 Sep;1(1):25-32. doi: 10.1016/s1076-6332(05)80780-9.
We aimed to determine if the characteristics and principles of visual search described for the detection of pulmonary nodules apply to extremity fractures.
The eye positions of staff orthopedic radiologists, radiology residents, and medical students were monitored as they searched hand and wrist X-ray images for fractures and a chest image for nodules.
More systematic scanning patterns were observed for experienced observers than inexperienced observers. Positive decisions for bone images were associated with prolonged gaze durations; prolonged gaze durations were significantly longer for false-negative versus true-negative decisions. Intercluster jump distances were found to be greater for chest images than bone images.
A search for bone fractures can be qualitatively characterized by classifying observer scan paths, dwell times, and jump distances. Gaze duration can be a useful predictor of bone image locations containing potential missed fractures. Perceptual feedback could aid observers in the detection of inconspicuous fractures.
我们旨在确定描述用于检测肺结节的视觉搜索特征和原则是否适用于四肢骨折。
当骨科放射科工作人员、放射科住院医师和医学生在手部和腕部X线图像中搜索骨折以及在胸部图像中搜索结节时，监测他们的眼位。
与经验不足的观察者相比，经验丰富的观察者观察到更系统的扫描模式。对骨骼图像的肯定判断与较长的注视持续时间相关；假阴性判断的注视持续时间显著长于真阴性判断。发现胸部图像的簇间跳跃距离大于骨骼图像。
通过对观察者的扫描路径、停留时间和跳跃距离进行分类，可以定性地描述对骨折的搜索。注视持续时间可能是包含潜在漏诊骨折的骨骼图像位置的有用预测指标。感知反馈可帮助观察者检测不明显的骨折。
