...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Digital Imaging >Effect of Display Magnification on Perceived Growth of Liver Lesions on Computed Tomography
【24h】

Effect of Display Magnification on Perceived Growth of Liver Lesions on Computed Tomography

机译：在计算机断层扫描上显示放大倍数对肝病变感知生长的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Our goal was to investigate the effect of displayed image magnification on perception of the size of hepatic lesions on abdominal computed tomography (CT) scans. Institutional review board approval and informed observer consent were obtained. Three experienced radiologists reviewed 90 CT image pairs in one session. Each image pair demonstrated a solitary, well-defined hypodense hepatic lesion measuring greater than 1 cm obtained at two points in time. The image pairs were presented three times in random order, once with the left image magnified, once with the right image magnified, and once with neither image magnified. The radiologists were asked to determine on which image the lesion was smaller or if there was no difference. The responses were analyzed statistically. The proportion of correct responses increased significantly as the difference in lesion size increased (p 0.001). The percent of correct responses was higher when neither CT image was magnified. Magnification of one image decreased the accuracy of the readers’ performance, especially at smaller differences, both of which were statistically significant (p 0.001). Thus, accuracy of detecting lesion size differences was degraded when the images were presented at differing magnification. This should be kept in mind when evaluating serial CT scans for growth or regression of tumors and other lesions.
机译：我们的目标是研究腹部计算机断层扫描（CT）扫描显示的图像放大率对肝病变大小的感知的影响。获得了机构审查委员会的批准和知情的观察员的同意。三名经验丰富的放射科医生在一疗程中检查了90对CT图像。每个图像对都显示出在两个时间点获得的大于1 cm的孤立的，明确的低密度肝病灶。图像对以随机顺序显示了三遍，一次放大左图像，一次放大右图像，一次都不放大。要求放射科医生确定在哪个图像上病变较小或是否没有差异。对响应进行统计分析。随着病变大小差异的增加，正确反应的比例显着增加（p <0.001）。当两个CT图像均未放大时，正确响应的百分比更高。放大一幅图像会降低阅读器性能的准确性，特别是在差异较小的情况下，两者均具有统计学意义（p <0.001）。因此，当以不同放大倍数呈现图像时，检测病变大小差异的准确性降低。在评估连续CT扫描以检查肿瘤和其他病变的生长或消退时应牢记这一点。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号