Clinical study of energy spectrum CT single energy combined with MAR for removing the artifacts of hip replacement

SU Wei; FENG Ru

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Clinical study of energy spectrum CT single energy combined with MAR for removing the artifacts of hip replacement

更新时间：2022-06-24

- Clinical study of energy spectrum CT single energy combined with MAR for removing the artifacts of hip replacement
- null Issue 10, Pages: 894(2021)
- 作者机构：
  
  1. 无锡市第九人民医院放射科,江苏,无锡,214062
  2. 无锡市人民医院医学影像科,江苏,无锡,214023
- 作者简介：
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SU Wei, FENG Ru. Clinical study of energy spectrum CT single energy combined with MAR for removing the artifacts of hip replacement. [J]. null (10):894(2021)
DOI：

SU Wei, FENG Ru. Clinical study of energy spectrum CT single energy combined with MAR for removing the artifacts of hip replacement. [J]. null (10):894(2021) DOI：

摘要

目的探讨能谱CT单能量联合多伪影去除（MAR）技术对去除髋关节置换物伪影的应用价值。方法收集于我院行髋关节置换术的31例患者的临床资料，患者均行能谱CT检查联合MAR技术扫描，基于原始能谱CT扫描数据重建70~140 KeV以10个KeV能级为间隔的8组单能量图像（非MAR组）及8组单能量MAR图像（MAR组）。由2名高年资影像医师对每组图像进行主观评分。检测相同能级下2组图像上髋关节假体周围金属高低密度伪影区、周围肌肉、周围骨组织、膀胱及皮下脂肪中的CT值及标准差（SD）值，计算并比较2组图像中假体周围肌肉、周围骨组织、膀胱中信噪比（SNR）和伪影指数（AI）。结果各能级中MAR组图像主观评分均高于非MAR组（P<0.05）。在110～130 KeV条件下，MAR组假体周围金属低密度区CT值均高于非MAR组（P<0.05）；在100 KeV、110 KeV、130 KeV条件下，MAR组假体周围金属低密度区SD值均低于非MAR组（P<0.05）；在110 KeV、120 KeV条件下，MAR组假体周围金属高密度区CT值均低于非MAR组（P<0.05）；在110～130 KeV条件下，MAR组假体周围金属高密度区SD值均低于非MAR组（P<0.05）。在110 KeV、120 KeV条件下，MAR组假体周围肌肉SNR值均高于非MAR组（P<0.05），AI值均低于非MAR组（P<0.05）；在100～120 KeV条件下，MAR组假体周围骨组织SNR值均高于非MAR组（P<0.05）；在100 KeV、110 KeV条件下，MAR组假体周围骨组织AI值均低于非MAR组（P<0.05）；各能级条件下，MAR组膀胱SNR值均高于非MAR组（P<0.05），AI值均低于非MAR组（P<0.05）。结论能谱CT单能量联合MAR技术对去除髋关节置换物伪影具有较好效果，可提高图像清晰度，进而提高诊断准确度，具备良好临床应用价值。

Abstract

关键词

能谱成像髋关节置换金属伪影体层摄影术

Keywords

spectral imaginghip replacementmetal artifacttomography

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