Disease prevalence and the index of detectability: A survey of studies of lung cancer detection by chest radiography

被引：15

作者：

Kundel, HL ^{[1
]}

机构：

[1] Univ Penn, Dept Radiol, Philadelphia, PA 19104 USA

来源：

MEDICAL IMAGING 2000: IMAGE PERCEPTION AND PERFORMANCE | 2000年 / 3981卷

关键词：

lung cancer; ROC analysis; technology evaluation; observer performance;

D O I：

10.1117/12.383100

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

A survey of 12 studies of lung cancer detection with cancer prevalence ranging from 0.9 to 476 cancers per 1000 showed that the unit-slope index of detectability, d', decreased from a high value of 3.9 at low prevalence to 1.4 at high prevalence. A proposed explanation is that the readers are operating on an ROC curve with a slope that is less than unity approximating 0.6. On such a curve, a shift to more stringent criteria that occurs with decreasing prevalence in order to minimize false positives, would result in a increased unity-slope d'.

引用

页码：135 / 144

页数：10

共 19 条

[1]

BERLIN NI, 1984, AM REV RESPIR DIS, V130, P545

[2] PHILADELPHIA PULMONARY NEOPLASM RESEARCH PROJECT - AN INTERIM REPORT [J].