Glossary of terms used on this site
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- Image resolution
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Image resolution has two main contributors: the size of the focal spot and the detector or image chain resolution. For nanofocus� and microfocus tubes, resolution lies in the range of several hundred of nanometers or in the very low micrometer range. X-ray image resolution is defined as the period length of the finest grid that can be comfortably viewed in the image. This grid may consist of gold structures on a silicon surface, but there are other alternatives as well. With a grid period length of 2 micron, for example, the spaces in between are 1 micron wide each. At the lowest magnification possible, image resolution equals detector resolution and can be as high as several hundred of micrometers. At very high magnifications, the resolution that can be obtained is limited by the size of the focal spot.