...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of stroke and cerebrovascular diseases: The official journal of National Stroke Association >Impact of window setting optimization on accuracy of computed tomography and computed tomography angiography source image-based alberta stroke program early computed tomography score
【24h】

Impact of window setting optimization on accuracy of computed tomography and computed tomography angiography source image-based alberta stroke program early computed tomography score

机译：窗口设置优化对计算机断层扫描和计算机断层扫描血管造影源基于图像的艾伯塔省中风程序早期计算机断层扫描评分的准确性的影响

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

The use of narrower window width settings on computed tomography (CT) improves sensitivity for detection of early ischemic changes in acute ischemic stroke. This study analyzed the effect of optimization of window settings on the accuracy of Alberta Stroke Program Early Computed Tomography Score (ASPECTS) performed on noncontrast CT (NCCT) and CT angiography source images (CTA-SI). ASPECTS was calculated on NCCT and CTA-SI with standard and optimized window width/center settings in a consecutive series of patients with acute ishcemic stroke. The difference between CT-based ASPECTS and ASPECTS performed on follow-up magnetic resonance imaging (MRI) were calculated to determine the disparity between initial estimates of the extent of ischemia on CT and follow-up lesion imaging by MRI. Forty-four patients were included into the study. The mean difference with respect to follow-up MRI-ASPECTS was 4.1 ± 2.2 for standard NCCT-ASPECTS, 3.7 ± 2.3 for optimized NCCT-ASPECTS, 3.0 ± 2.2 for standard CTA-SI-ASPECTS, and 2.7 ± 2.1 for optimized CTA-SI-ASPECTS. The improvement introduced by the optimization of window settings and use of CTA-SI was statistically significant (P <.01). Our data indicate that the accuracy of ASPECTS is improved with optimized window display settings. This improvement is irrespective of experience or specialty of the rater performing the assessment.
机译：在计算机断层扫描（CT）上使用更窄的窗口宽度设置可提高检测急性缺血性卒中早期缺血性变化的敏感性。这项研究分析了窗口设置的优化对在非对比CT（NCCT）和CT血管造影源图像（CTA-SI）上进行的艾伯塔省卒中计划早期计算机断层扫描评分（ASPECTS）准确性的影响。 ASPECTS是在NCCT和CTA-SI上以连续的一系列急性缺血性卒中患者的标准和最佳窗口宽度/中心设置计算得出的。计算基于CT的ASPECTS与在后续磁共振成像（MRI）上进行的ASPECTS之间的差异，以确定CT缺血程度的初始估计值与通过MRI进行的病变成像之间的差异。该研究包括44名患者。相对于后续MRI-ASPECTS，标准NCCT-ASPECTS的平均差异为4.1±2.2，优化后的NCCT-ASPECTS为3.7±2.3，标准CTA-SI-ASPECTS为3.0±2.2，优化后的CTA-2.7为2.1±2.1 SI-方面。通过优化窗口设置和使用CTA-SI引入的改进具有统计学意义（P <.01）。我们的数据表明，通过优化的窗口显示设置可以提高ASPECTS的准确性。无论进行评估的评估者的经验或专业如何，这种改进都是如此。

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