Visual illusions in the interpretation of the radiographic image.
Visual illusions in the interpretation of the radiographic image.
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DOI：
10.1016/0363-0188(89)90030-3
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发表时间：
1989-03-01
影响因子：
1.4
通讯作者：
Daffner, R H
中科院分区：
文献类型：
--
作者：
Daffner, R H
人体是一个由不同射线密度的组织组成的复合体。重叠的阴影，背景密度的差异，主观轮廓的形成，以及视差效应往往会产生各种只存在于“心灵之眼”的视错觉，并可能被误认为是重大的病理。这些现象中的大多数是由马赫效应产生的，这是侧抑制的生理过程的结果。主观轮廓形成是一种“心理生理”现象，其中完整的“结构”从最小的轮廓出现。如果真实的结构对射线照相图像有贡献，则发生视差效应。这篇综述讨论了图像接收的基本生理学和虚假图像的形成。马赫带的存在，背景密度效应，主观轮廓，和真实的或物理现象的临床后果进行了说明。
The human body is a complex of tissues of different radiographic densities. Overlapping shadows, differences in background density, subjective contour formation, and the parallax effect often produce a variety of optical illusions that exist only in the "mind's eye" and may be mistaken for significant pathology. Most of these phenomena are produced by the Mach effect, a consequence of the physiological process of lateral inhibition. Subjective contour formation is a "psychophysiological" phenomenon in which complete "structures" appear from minimal outlines. A parallax effect occurs if real structures contribute to the radiographic image. This review discusses the basic physiology involved in image reception and the formation of false images. Clinical consequences of the presence of Mach bands, background density effect, subjective contours, and real or physical phenomena are illustrated.