Evaluating clinical implications of 15-mega-sub-pixel liquid-crystal display in phase contrast mammography
Evaluating clinical implications of 15-mega-sub-pixel liquid-crystal display in phase contrast mammography
复制标题
评估 15 兆亚像素液晶显示器在相差乳腺 X 线摄影中的临床意义
DOI：
10.1007/s12282-015-0603-1
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发表时间：
2015
期刊：
影响因子：
4
通讯作者：
Ishibashi T.
中科院分区：
文献类型：
--
作者：
Takane Y;Kawasumu Y;Sato M;Horie T;Ishibashi T.
背景相位对比乳房摄影(PCM)系统的特点是产生边缘增强的锐利图像和高分辨率的25μm/像素乳房X光摄影。然而，并不是所有的PCM图像信息都能以500万像素(5MP)的分辨率显示在显示器上，尽管5MP监视器被推荐用于解释数字乳房X光照片。因此，我们研究了1500万亚像素(15-MSP)显示器用于PCM图像的潜在用途。方法我们使用了一种同时提供5MP和15MSP显示器的显示器，通过使用亚像素驱动(SPD)技术将显示器在亚像素方向的空间分辨率提高了三倍。对比度细节乳房X光摄影模体图像由四位放射技术专家进行视觉评估。结果在49和100%的放大倍率下，15-MSP显示器的检测能力明显优于5-MP显示器。在其他放大率下，15-MSP显示器的检测能力高于5-MP显示器，但差异不显著。结论15-MSP显示器具有比传统5-MP显示器更好的检测能力。采用SPD技术的15MSP显示器适用于高分辨率数字乳房X光检查，如PCM系统生产的数字乳房X光检查。
BackgroundPhase-contrast mammography (PCM) systems characteristically yield sharp images with edge enhancement and high-resolution 25-μm/pixel mammograms. However, not all PCM image information can be shown on the display at a resolution of 5-megapixel (5-MP), although 5-MP monitors are recommended for interpretation of digital mammograms. Therefore, we investigated the potential utility of a 15-mega-sub-pixel (15-MsP) display for PCM images.MethodsWe used a monitor that offered both 5-MP and 15-MsP displays by using a sub-pixel drive (SPD) technique to increase the spatial resolution of the monitor by threefold in the direction of the sub-pixels. Contrast-detail mammography phantom images were evaluated visually by four radiologic technologists. In this study, four display magnification ratios were used and the calculated image quality figures (IQFs) were compared with those of a 5-MP display.ResultsThe detection capability of the 15-MsP display was significantly better than that of the 5-MP display at magnification ratios of 49 and 100 %. At other magnification ratios, the detection capability of the 15-MsP display was higher than that of the 5-MP display, but the difference was not significant.ConclusionsA 15-MsP display has the potential to provide better detection than that provided by conventional 5-MP displays. A 15-MsP display using SPD technology is suitable for high-resolution digital mammograms, such as those produced by PCM systems.