...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Academic radiology >Monoenergetic imaging of dual-energy CT reduces artifacts from implanted metal orthopedic devices in patients with factures.
【24h】

Monoenergetic imaging of dual-energy CT reduces artifacts from implanted metal orthopedic devices in patients with factures.

机译：双能CT的单能成像减少了骨折患者植入的金属骨科器械的假象。

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

RATIONALE AND OBJECTIVES: The purpose of this study was to optimize photon energy setting to reduce metal artifact of computed tomography (CT) images from implanted metal orthopedic devices in patients with fractures with monoenergetic imaging of dual-energy CT. MATERIALS AND METHODS: This study included 47 patients with factures who underwent metal orthopedic device implanting. After dual-energy CT scan, monoenergetic software was used to postprocess with the following six photon energies: 40 kiloelectron-voltage (keV), 70 keV, 100 keV, 130 keV, 160 keV, and 190 keV. Two radiologists evaluated and rated the reformatted images with six different photon energies and average weighted 120 kVp images according to 4-score scale. The Wilcoxon rank-sum test was used to compare image quality scores for total, internal, and external metal orthopedic devices. Interreader agreement for image quality scoring was calculated. RESULTS: Monoenergetic imaging of dual-energy CT improved the quality of CT images in the fracture patients with metal orthopedic devices compared to the average weighted 120 kVp images for the total, external, and internal metal orthopedic devices (all P values < .01). Optimal keV setting with the lowest metal artifact was 130 keV for total, internal, and external metal orthopedic devices. Good interreader agreement was found for the evaluation of image quality for total, internal, and external metal orthopedic devices. CONCLUSIONS: Monoenergetic imaging of dual-energy CT improves quality of CT images in patients with metal orthopedic devices after fracture. Reformatted images at 130 keV have the optimal quality for total, internal, and external metal orthopedic devices.
机译：理由和目的：这项研究的目的是优化光子能量设置，以减少接受双能CT单能成像的骨折患者中植入的金属骨科设备的计算机断层扫描（CT）图像的金属伪影。材料与方法：本研究纳入47例行金属骨科器械植入手术的骨折患者。在双能CT扫描后，使用单能软件对以下六个光子能量进行后处理：40千电子电压（keV），70 keV，100 keV，130 keV，160 keV和190 keV。两位放射线医师对具有六种不同光子能量的重新格式化图像进行了评估并定级，并根据4评分标准平均加权了120 kVp图像。 Wilcoxon秩和检验用于比较总体，内部和外部金属骨科设备的图像质量得分。计算了阅读器间的图像质量评分协议。结果：与总的，外部的和内部的金属骨科器械的平均加权120 kVp图像相比，双能CT的单能成像改善了骨折患者中金属骨科器械的CT图像质量（所有P值<.01） 。对于全部，内部和外部金属骨科器械，具有最低金属伪影的最佳keV设置为130 keV。在评估整体，内部和外部金属骨科设备的图像质量时，发现了良好的阅读器一致性。结论：双能CT的单能成像改善了金属骨科器械骨折后CT图像的质量。在130 keV下重新格式化的图像对于全部，内部和外部金属骨科设备均具有最佳质量。

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