Emphysema: Effect of reconstruction algorithm on CT imaging measures
Emphysema: Effect of reconstruction algorithm on CT imaging measures
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DOI：
10.1148/radiol.2321030383
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发表时间：
2004-07-01
期刊：
影响因子：
19.7
通讯作者：
Goldin, JG
中科院分区：
文献类型：
--
作者：
Boedeker, KL;McNitt-Gray, MF;Goldin, JG
在目前的研究中，评估了重建算法对肺气肿患者的计算机断层扫描(CT)肺图像定量测量的影响。用标准算法和替代算法(S)重建42例受试者的CT图像数据集。算法被归类为过度增强、尖锐、标准或平滑。将来自替代算法数据集的密度掩模和体积测量结果与标准算法数据集进行比较。过度强化类别的平均变化为9.4%(即，平均得分从35.5%变化到44.9%)；尖锐类别的变化为2.4%；而平滑类别的变化为-1.0%。总肺体积测量的差异小于1%。总之，CT重建算法可能会对密度掩模的结果产生很大的影响，特别是对于某些重建算法。(C)RSNA，2004年。
In the current study, the effects of reconstruction algorithms on quantitative measures derived from computed tomographic (CT) lung images were assessed in patients with emphysema. CT image data sets were reconstructed with a standard algorithm and alternative algorithm(s) for 42 subjects. Algorithms were grouped as overenhancing, sharp, standard, or smooth. Density mask and volume measurements from the alternative algorithm data sets were compared with standard algorithm data sets. The overenhancing category yielded an average shift of 9.4% (ie, a shift in average score from 35.5% to 44.9%); the sharp category, a shift of 2.4%; and the smooth category, a shift of -1.0%. Differences in total lung volume measurements were less than 1%. In conclusion, the CT reconstruction algorithm may strongly affect density mask results, especially for certain reconstruction algorithms. (C) RSNA, 2004.