Observer accuracy in the detection of pulmonary nodules on CT: effect of cine frame rate
Observer accuracy in the detection of pulmonary nodules on CT: effect of cine frame rate
复制标题
DOI：
10.1016/j.crad.2009.05.016
复制
发表时间：
2010-02-01
影响因子：
2.6
通讯作者：
Desai, S. R.
中科院分区：
文献类型：
--
作者：
Copley, S. J.;Bryant, T. H.;Desai, S. R.
目的：为了评估电影帧率对CT（Computed Tomography，CT）肺结节检测准确性的影响，材料和方法：对15例有（n = 13）或无（n = 2）肺转移的连续患者的CT图像进行了识别。由两名胸部放射科医生进行初步评估，提供“实际”或参考阅读。随后，10名放射科医师[委员会认证的放射科医师（n = 4）或放射科住院医师（n = 6）]使用不同的固定电影帧速率进行结节检测。采用受试者内方差分析（ANOVA）对数据进行评价。结果：89个结节被胸部放射科医师识别（中位数8个，范围0-29个/患者：中位数直径9 mm，范围4-40 mm）。有一个无统计学意义的趋势，以减少准确性在较高的帧速率（p=0.113）与经验丰富的观察员和居民之间没有统计学意义上的差异（p = 0.79）。结论：肺结节检测的准确性在较高的电影帧速率降低，无关的观察员的经验。(C)2009年皇家放射科医师学院。由爱思唯尔有限公司出版。保留所有权利。
AIM: To assess the effect of cine frame rate on the accuracy of the detection of pulmonary nodules at Computed tomography (CT).MATERIALS AND METHODS: CT images of 15 consecutive patients with (n = 13) or without (n = 2) pulmonary metastases were identified. Initial assessment by two thoracic radiologists provided the "actual" or reference reading. Subsequently, 10 radiologists [board certified radiologists (n = 4) or radiology residents (n = 6)] used different fixed cine frame rates for nodule detection. Within-subjects analysis of variance (ANOVA) was used to evaluate the data.RESULTS: Eighty-nine nodules were identified by the thoracic radiologists (median 8, range 0-29 per patient: median diameter 9 mm, range 4-40 mm). There was a non-statistically significant trend to reduced accuracy at higher frame rates (p=0.113) with no statistically significant difference between experienced observers and residents (p = 0.79).CONCLUSION: The accuracy of pulmonary nodule detection at higher cine frame rates is reduced, unrelated to observer experience. (C) 2009 The Royal College of Radiologists. Published by Elsevier Ltd. All rights reserved.