New Methods for Analysis of Eye-tracking Data for Medical Image Perception Resear

描述(由申请人提供)：眼球跟踪方法是研究医学图像知觉的基础，也是发现放射科医生解释失败的原因的核心。然而，对眼球跟踪数据的分析相当原始，忽视了潜在的有价值的信息。基于最近开发的用于分析接收器操作特征(ROC)数据、自由反应操作特征(FROC)标记评级数据和特定位置ROC(LROC)数据的模型，我们提出了一种新的眼动跟踪数据分析方法。基于Chakraborty模型，我们提出了一种综合分析眼部位置数据的真假阳性特征，并利用放射科医生指示的可疑区域的怀疑程度的方法。与仅通过眼球跟踪相比，包含FROC性能数据有望更好地理解图像感知。最近的两个发展使综合分析成为可能：查克拉博蒂搜索模型和估计其参数的方法。该模型的参数与眼睛跟踪研究中测量的物理量相对应。该项目包括量化这些对应关系，提供综合分析的演示，并展示其相对于单独的眼球跟踪的优势。到目前为止，眼球跟踪和FROC研究都是沿着独立的轨道进行的，一个是为了理解图像感知，另一个是为了衡量表现。该项目展示了组合方法如何产生更强大的工具来分析眼球跟踪数据和理解图像感知。有了基于改进分析的对图像感知的更好理解，我们将能够更好地提高诊断性能。这种方法的应用包括放射科医生的培训和改进的CAD算法。同时获得的丰富的FROC和眼部位置数据集，以及分析软件将在我们项目结束时免费提供。与公共健康相关的眼球跟踪设备测量放射科医生的视线。这些信息是理解医学图像感知的基础，也是了解放射科医生解释失败的原因的核心。然而，对这类数据的分析一直很原始，忽视了有价值的信息。我们提出了一种新的眼动数据分析方法。有了对影像感知的更好理解，我们将能够更好地提高放射科医生的表现，减少解释错误。

DESCRIPTION (provided by applicant): Eye-tracking methods are fundamental for the study of medical image perception and central to discoveries about why radiologist interpretative failures occur. However, analysis of eye-tracking data has been rather primitive and ignores potentially valuable information. We propose a new approach to the analysis of eye-tracking data based on a recently developed model for the analysis of receiver operating characteristic (ROC) data, free-response operating characteristic (FROC) mark-rating data, and location- specific ROC (LROC) data. Based on Chakraborty's model, we propose a method that integrates the analysis of true and false positive characterizations of eye position data and uses the degree of suspicion of radiologist indicated suspicious regions. The inclusion of the FROC performance data is expected to yield better understanding of image perception than is possible via eye-tracking alone. The integrated analysis is enabled by two recent developments: the Chakraborty search model and a method for estimating its parameters. The parameters of the model correspond to physical quantities that are measured in eye-tracking studies. The project consists of quantifying these correspondences, providing a demonstration of integrated analysis, and showing its advantages over eye-tracking alone. Eye-tracking and FROC studies have so far proceeded along independent tracks, one to understand image perception and the other to measure performance. This project shows how a combined approach can yield a more powerful tool for analyzing eye-tracking data and understanding image perception. With better understanding of image perception based on improved analysis, we will be better able to improve diagnostic performance. Applications of this method include radiologist training and improved CAD algorithms. The rich dataset of simultaneously acquired FROC and eye-position data, and analysis software will be made freely available at the close of our project. PUBLIC HEALTH RELEVANCE Eye-tracking apparatus measures where radiologists look. This information is fundamental to understand medical image perception and central to learning why radiologist interpretative failures occur. However, analysis of such data has been primitive and ignores valuable information. We propose a new approach to the analysis of eye-tracking data. With better understanding of image perception we will be better able to improve radiologist performance and reduce interpretive errors.