Vyborny C J
Department of Radiology, Columbia LaGrange Memorial Hospital, LaGrange, IL 60525, USA.
Radiographics. 1997 Mar-Apr;17(2):479-98. doi: 10.1148/radiographics.17.2.9084085.
Image quality considerations in medical radiography are as diverse and complex as are the types of anatomy and pathologic conditions encountered in clinical practice. Nevertheless, certain basic concepts are central to the discussion of image quality in any radiographic examination. These concepts include the types of significant, or target, findings that are expected to occur and the anatomic background on which they are likely to appear. Physical parameters of radiographic systems, such as contrast, sharpness, and noise, act in unison in determining the final appearance of a radiograph and affect not only the portrayal of the expected pathologic condition but also that of the normal anatomy. Basic radiographic approaches in different clinical radiographic examinations can be derived from anticipated targets and backgrounds as well as from known physical determinants of image quality in radiography.
医学放射成像中的图像质量考量，与临床实践中遇到的解剖结构类型和病理状况一样多样且复杂。然而，某些基本概念是任何放射检查中图像质量讨论的核心。这些概念包括预期出现的重要或目标性发现的类型，以及它们可能出现的解剖学背景。放射成像系统的物理参数，如对比度、清晰度和噪声，共同作用决定了X光片的最终呈现效果，不仅影响预期病理状况的显示，也影响正常解剖结构的显示。不同临床放射检查中的基本放射成像方法，可以从预期的目标和背景以及放射成像中已知的图像质量物理决定因素推导得出。
