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首页> 外文期刊>Journal of Digital Imaging >Increasing the Number of Gray Shades in Medical Display Systems—How Much is Enough?
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Increasing the Number of Gray Shades in Medical Display Systems—How Much is Enough?

机译：医疗显示系统中灰色阴影的数量增加了多少？

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摘要

Medical images produced by x-ray detectors, computed tomography (CT) scanners, and other modalities typically contain between 12–16 bits/pixel, which corresponds to 4,096–65,536 shades of gray. On the other hand, we see that these images are visualized by means of medical displays that have much lower available number of gray shades. For a long time medical LCDs only supported 8 bits or 256 shades of gray per pixel. With the introduction of medical displays optimized for mammography, the available number of gray scales increased to 1,024. Recently, several manufacturers announced new display systems with higher bit depth. Because higher bit depth often directly results in higher display cost, it is a logical question to ask if this is required or even useful at all. This paper will give an answer by investigating several aspects such as limitations of the human visual system, digital imaging and communication in medicine grayscale standard display function calibration, and characteristics of medical LCDs.
机译：由X射线探测器，计算机断层扫描（CT）扫描仪和其他方式产生的医学图像通常包含12-16位/像素，相当于4,096-65,536个灰色阴影。另一方面，我们看到这些图像是通过具有低得多的灰色阴影数量的医疗显示器可视化的。长期以来，医用LCD仅支持每像素8位或256级灰度。随着针对乳腺X射线照相术优化的医疗显示器的推出，可用的灰度等级数量增加到1,024。最近，几家制造商宣布了具有更高位深度的新显示系统。由于较高的位深度通常会直接导致较高的显示成本，因此逻辑上的问题是询问这是否是必需的，甚至根本没有用。本文将通过研究几个方面给出答案，例如人类视觉系统的局限性，医学灰度标准显示功能校准中的数字成像和通信以及医学LCD的特性。

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