期刊
JOURNAL OF MEDICAL SCREENING
卷 9, 期 3, 页码 125-127出版社
BRITISH MED JOURNAL PUBL GROUP
DOI: 10.1136/jms.9.3.125
关键词
-
Objectives: To assess the accuracy of screening for abdominal aortic aneurysms (AAAs) by ultrasound (US). Setting: An aneurysm screening programme in Huntingdon. Methods: False negative tests were identified by tracing all patients with a ruptured aneurysm who. were screened and then finding the number classified as normal on US. False positive tests were identified by calculating the number of aneurysmal aortas on US that were classified as normal on CT. Measurement variability of the infrarenal aortic diameter between US and CT was estimated. Results: 14 out of 93 patients with a ruptured AAA since 1991 had been screened. No ruptured aneurysm had been classified as normal on US. All 64 patients with an AAA larger than 4.5 cm on US had their aneurysm confirmed on CT. The mean difference between CT and US measurements was 4 mm. The limit of variability between CT and US was 12 mm. Conclusion: No false negative scans were found using a cut off point of 3 cm as abnormal. No false positives were found if subjects with an AAA exceeding 4.5 cm were referred for further procedures. A serial US screening policy has excellent screening performance, justifying its use as a screening tool.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据