X-ray transmission microtomography using synchrotron radiation

This work reports the feasibility of a non-destructive synchrotron radiation X-ray transmission imaging technique development at Brazilian synchrotron light source. The quality control image parameters (spatial and density resolution and noise) are given and microtomograms presented. Microtomograms of biomedical samples are presented. The tomography system was mounted into the XRF beamline that uses a high-intensity white beam with 12 keV effective energy, and maximum width and height equals to 11 and 1 mm, respectively. The detector used to collect the data was a 512-pixel Hamamatsu linear array with width of 50 mum (36 mum of sensitivity length) and cooled by a Peltier junction, causing the temperature falling down to 15degreesC. The samples were placed over a computer controlled table with 0.5degrees angular resolution and turned around the center covering 360degrees. To reconstruct the sample a parallel beam filtered back-projection algorithm was used. (C) 2003 Elsevier Science B.V. All rights reserved.