VISUAL SEARCH AND FILM READER ERROR IN RADIOLOGY

放射学中的视觉搜索和读片器错误

• 批准号: 2088419
• 负责人: HAROLD L. KUNDEL
• 金额: $ 20.88万
• 依托单位: UNIVERSITY OF PENNSYLVANIA
• 依托单位国家: 美国
• 财政年份: 1980
• 资助国家: 美国
• 起止时间: 1980-08-01 至 1997-04-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/2088419
• 关键词: breast neoplasm /cancer diagnosis; diagnosis quality /standard; human subject; mammography; radiology; respiratory disorder diagnosis; sensory feedback; visual perception; visual tracking

Observers screening mammograms for breast cancer, are estimated to have a sensitivity of about 75 percent and a specificity of about 95 percent. A 25 percent miss rate is a clinically significant level of error that deserves study to find the causes and to develop methods for reducing error. While studying observers searching chest images for lung nodules, we observed that unreported nodules received prolonged eye-fixation dwell time. This phenomenon of perceptual attraction to occult lesions has been used to provide visual cues for revising decision making. Eye-position recording during the initial viewing is used to identify areas that receive prolonged visual dwell time. These areas are immediately circled on the image and the observer is instructed to re-examine the cued areas and revise his or her initial decision. A controlled study using receiver operating characteristic (ROC) methods have shown an absolute improvement in detection performance. We propose to verify the psychophysical relationship between visual dwell time and the detection of clinically-occult breast tumors as measured by decision outcome, and to extend the basic observations made using pulmonary nodules to breast lesions. The value of perceptual cues for improving the detection of cancer in screening mammograns will be evaluated. The main purpose of this research is to determine how to effectively use programmable soft copy displays in conjunction with perceptual feedback to decrease observer error rates during the screening of mammograms for cancer.

据估计，对乳腺癌进行乳房X光检查的观察者 灵敏度为75%，特异性为95%。一 25%的失误率是临床上显著的错误水平， 值得研究，以找出原因，并制定减少的方法， 错误. 在研究观察者搜索肺部结节的胸部图像时， 观察到未报告的结节接受了长时间的眼睛注视停留， 时间这种对隐匿性病变的知觉吸引现象， 用来提供视觉提示以修正决策。眼睛位置 在初始观看期间的记录用于识别 延长视觉停留时间。这些区域立即被圈起来 并指示观察者重新检查提示区域 改变他或她最初的决定使用接收器的对照研究 工作特性（ROC）方法已经显示出绝对的改善 在检测性能方面。 我们建议验证视觉停留与视觉活动之间的心理物理关系， 时间和临床隐匿性乳腺肿瘤的检测， 决策结果，并扩展使用 肺结节到乳腺病变。感知线索的价值 提高乳房X线检查中的癌症检测将是 评估。 这项研究的主要目的是确定如何有效地使用 可编程软拷贝显示与感知反馈相结合， 降低乳腺X线检查中的观察者错误率， 癌