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首页> 外文会议>Digital mammography >Validation of a Simulated Dose Reduction Methodology Using Digital Mammography CDMAM Images and Mastectomy Images
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Validation of a Simulated Dose Reduction Methodology Using Digital Mammography CDMAM Images and Mastectomy Images

机译：使用数字乳腺X线摄影CDMAM图像和乳房切除术图像的模拟剂量减少方法学的验证

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摘要

The purpose of this study is to evaluate the effect of simulated dose reduction using CDMAM and mastectomy images acquired on two digital mammography systems. High dose images have been artificially degraded to reduced dose levels by systematically adding flltered noise. Automated scoring has been carried out on the degraded CDMAM images and on experimental CDMAM images, taken at the same corresponding reduced doses. Contrast-detail curves were derived for both, at all doses, and compared. Relative difference in the contrast-detail curves was approximately 5% overall for all four doses. For the mastectomy images noise power spectra were obtained and the ratio of experimental to synthetic low dose NPS profiles averaged for all doses at 1.04. The largest differences in the NPS profiles were found at the high spatial frequencies, corresponding with the differences in the small discs in the contrast-detail curves.
机译：这项研究的目的是评估使用在两个数字乳腺摄影系统上获取的CDMAM和乳房切除术图像进行的模拟剂量减少的效果。高剂量图像已通过系统地添加过滤噪声而被人为地降低到降低的剂量水平。已对降级的CDMAM图像和实验CDMAM图像进行了自动计分，并以相同的相应减少剂量拍摄。在所有剂量下均得出了对比度细节曲线，并进行了比较。对于所有四个剂量，对比-细节曲线的相对差异总体上约为5％。对于乳房切除术图像，获得了噪声功率谱，并且所有剂量的实验剂量与合成低剂量NPS分布图的比率取平均值为1.04。 NPS轮廓的最大差异是在高空间频率处发现的，与对比度细节曲线中小圆盘的差异相对应。

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  • 来源
    《Digital mammography》|2010年|p.78-85|共8页
  • 会议地点 Girona(ES);Girona(ES)
  • 作者

    Mary Yip; Federica Zanca; Alistair Mackenzie; Adam Workman; Kenneth C. Young; David R. Dance; Hilde Bosnians; Emma Lewis; Kevin Wells;

  • 作者单位

    Centre for Vision, Speech and Signal Processing, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, GU2 7XH, UK;

    Department of Radiology, University Hospitals Gasthuisberg, Herestraat 49, B-3000 Leuven, Belgium;

    National Coordinating Centre for the Physics of Mammography, Royal Surrey County Hospital, Guildford, GU2 7XX, UK;

    Northern Ireland Regional Medical Physics Agency, Forster Green Hospital, Belfast, BT8 4HD, UK;

    National Coordinating Centre for the Physics of Mammography, Royal Surrey County Hospital, Guildford, GU2 7XX, UK;

    National Coordinating Centre for the Physics of Mammography, Royal Surrey County Hospital, Guildford, GU2 7XX, UK;

    Department of Radiology, University Hospitals Gasthuisberg, Herestraat 49, B-3000 Leuven, Belgium;

    Centre for Vision, Speech and Signal Processing, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, GU2 7XH, UK;

    Centre for Vision, Speech and Signal Processing, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, GU2 7XH, UK;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 生物医学工程;
  • 关键词

    digital mammography; simulation; CDMAM phantom; validation; mastectomy; dose reduction;

    机译：数字乳腺摄影模拟; CDMAM幻像；验证；乳房切除术减少剂量;

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