Phase-contrast_x-ray_image_of_spider.jpg (682 × 509 pixels, file size: 241 KB, MIME type: image/jpeg)
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Summary
| Description |
English: High resolution x-ray image of a spider. The phase-contrast technique provides much higher contrast than normal absorption-contrast x-ray imaging, making it possible to see smaller details. It has become an important method for visualizing cellular and histological structures in a wide range of biological and medical studies. There are several technologies being used for x-ray phase-contrast imaging, all utilizing different principles to convert phase variations in the x-rays emerging from an object into intensity variations. These include propagation-based phase contrast, Talbot interferometry, refraction-enhanced imaging, and x-ray interferometry. Phase contrast requires an x-ray source that can generate very small and very bright focal spots. In the case shown here, the source is a metal-jet-anode microfocus x-ray tube, where the solid metal anode of a normal tube is replaced with a jet of liquid metal. This allows extremely high power density (>500 kW/mm2) and extremely small focal spots (5-30 µm). |
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| Date | |||
| Source | http://www.excillum.com/pressdownloads.html | ||
| Author | Excillum AB, Sweden (copyright holder) | ||
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 05:29, 18 August 2012 | | 682 × 509 (241 KB) | Stigmatella aurantiaca | {{Information |Description ={{en|1=Description: High resolution x-ray image of a spider. The phase-contrast technique provides much higher contrast than normal absorption-contrast x-ray imaging, making it possible to see smaller details. It requires... |
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