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Diffraction Enhanced Images

If you use any of these images, please give credit to

Robert. A. Lewis, Christopher. J. Hall, Alan. P. Hufton, Sarah. E. Pinder, Andrew. J. Evans and Stephen. H. Evans and the team at the SYRMEP beamline at ELETTRA.

Click on one of the images below to see the images.

Phantom
Mouse Organs
Mouse Legs
Human Finger
Robin

These images show 

  • Almost no scattered radiation

  • Contrast enhancement due to sensitivity to angular deviations caused by X-ray refraction

Four types of images are displayed on the subsequent pages. The images that we have termed conventional were recorded by placing the object in contact with the detector. The peak of analyzer images were recorded with the analyzer set for peak reflectivity and represent absorption contrast images which are almost entirely free of scattered radiation including scatter at angles as small as 5 micro radians. The apparent absorption and apparent refraction images were produced using the method described in How DEI Works. These images are synthesised from 2 images recorded with the analyser set to the 50% reflectivity point on either side of the rocking curve where the variation in reflectivity with angle is of opposite slope.

All images were recorded on a fibre optic coupled CCD having 14 micrometre pixels except for the phantom images which were recorded on a phosphor imaging system.

 
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Send mail to c.j.hall@dl.ac.uk with questions or comments about this web site.
Last modified: May 20, 2001