• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Conference on Medical Imaging 2008: Physics of Medical Imaging; 20080218-21; San Diego,CA(US) >Impact on image quality when a variety of X-ray source detector distances are considered for the arthritic cervical spine
【24h】

Impact on image quality when a variety of X-ray source detector distances are considered for the arthritic cervical spine

机译：当考虑到关节炎颈椎的各种X射线源探测器距离时，对图像质量的影响

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 unavoidable distance between the cervical spine and the image receptor presents measurable levels of geometric unsharpness, which hinders arthritic scoring. The current work explores the impact on the visualisation of important arthritic indicators by increasing the distance between the X-ray source and image detector (SID) from the commonly employed 150cm. Lateral cervical spine images were acquired of an osteoarthritic human cadaver using a DR imaging system. All exposures were taken at 65kVp using automatic exposure control and various SID distances from 150 to 210cm. Four experienced clinicians assessed the images by means of visual grading analysis, using objective criteria based on normal anatomic features and arthritic indicators. A statistically significant improvement in image quality was observed with images acquired at 210cm compared with those acquired at 150cm and 180cm (p<0.05), with values of 56.0 (SE=1.105), 50.85 (SE=1.415) and 65.35 (SE=0.737) respectively. All images with a SID of 210cm scored higher for visually sharp reproduction of the spinous processes, facet joints, intervertebral disc spaces and trabecular bone pattern compared with both 180cm and 150cm. Results indicate that total image quality and visualisation of specific anatomical features is improved in cervical spine radiographs when traditionally employed SID distances are increased.
机译：颈椎和图像接收器之间不可避免的距离呈现出可测量的几何不清晰度水平，这阻碍了关节炎评分。当前的工作通过增加X射线源与图像检测器（SID）之间的距离（通常为150cm）来探索对重要关节炎指示器可视化的影响。使用DR成像系统获取骨关节炎人尸体的颈椎外侧图像。使用自动曝光控制和150至210cm的各种SID距离，以65kVp进行所有曝光。四名经验丰富的临床医生使用基于正常解剖特征和关节炎指标的客观标准，通过视觉分级分析对图像进行了评估。与在150cm和180cm处采集的图像相比，在210cm处采集的图像的图像质量具有统计学上的显着改善（p <0.05），分别为56.0（SE = 1.105），50.85（SE = 1.415）和65.35（SE = 0.737） ） 分别。与180cm和150cm相比，所有SID为210cm的图像在棘突，小关节，椎间盘间隙和小梁骨图案的视觉清晰再现方面得分更高。结果表明，当传统使用的SID距离增加时，颈椎X线片中的总图像质量和特定解剖特征的可视化将得到改善。

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