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首页> 外文会议>International Workshop on Breast Imaging >Suspicious minds: effect of using a lesion likelihood score on reader behaviour with interactive mammographic CAD
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Suspicious minds: effect of using a lesion likelihood score on reader behaviour with interactive mammographic CAD

机译：可疑的头脑：使用病灶可能性评分和交互式乳腺摄影CAD对阅读者行为的影响

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Computer-Aided Detection (CAD) systems are used to help readers in interpreting screening mammograms. Traditional use of CAD in mammography involves an expert reader searching the image initially unaided, and then once again with the aid of CAD prompts that automatically indicate suspicious regions. An alternative approach is interactive CAD, where prompts are only displayed when readers query a suspicious region for which a prompt is available. These prompts are typically displayed with a given confidence of malignancy for that region. Two non-expert observer studies of interactive CAD were conducted to investigate its effect on the visual search of synthetic images containing microcalcification clusters. Experiment 1 (n=44) used no-CAD and interactive CAD conditions, whereas Experiment 2 (n=43) used interactive CAD in both conditions but in one there was an additional 'image score' denoting the likelihood that an image contained a cluster. In both experiments, the addition of interactive CAD (Experiment 1) and an image score (Experiment 2) did not change sensitivity or specificity compared to no-CAD and interactive CAD-alone, respectively. In Experiment 1, the higher the confidence value for a given prompt, the more likely a participant was to act on it. This effect was stronger for true prompts than false prompts. In Experiment 2, participants spent longer viewing images with higher image scores. When no prompt was available, they were more likely to make false positive errors on those images. However, decisions made on available prompts were influenced primarily by confidence values of the prompts rather than overall image score.
机译：计算机辅助检测（CAD）系统用于帮助读者解释乳腺X线照片。乳腺摄影中CAD的传统用法是由专业阅读器搜索最初不需要的图像，然后借助自动提示可疑区域的CAD提示再次进行搜索。另一种方法是交互式CAD，其中仅当读者查询提示可用的可疑区域时才显示提示。这些提示通常以给定的该地区恶性肿瘤的置信度显示。进行了两项交互式CAD的非专业观察者研究，以研究其对包含微钙化簇的合成图像的视觉搜索的影响。实验1（n = 44）使用非CAD和交互式CAD条件，而实验2（n = 43）在两种条件下都使用交互式CAD，但是在一个条件中，存在一个附加的“图像分数”，表示图像包含聚类的可能性。在两个实验中，分别添加交互式CAD（实验1）和图像评分（实验2）与不使用CAD和单独使用交互式CAD相比，不会改变灵敏度或特异性。在实验1中，给定提示的置信度值越高，则参与者对其执行操作的可能性就越大。对于真实提示，此效果要强于错误提示。在实验2中，参与者花了更长的时间观看具有更高图像分数的图像。当没有提示可用时，他们更有可能在这些图像上产生假阳性错误。但是，对可用提示做出的决定主要受到提示的置信度值的影响，而不是整体图像分数的影响。

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