3D rendering of the shark tooth with a virtually clipped rectangular segment. Recorded at the Australian Synchrotron, Medical Imaging beamline on 29 Nov 2009. Data acquisition: X-ray energy – 40kev, resolution – 12 microns, CT projections – 600 (0.3 deg step), beamsize – 1 x 7 mm (had to do 12 scans and then to stitch them together), detector – photonicscience. Software used in the processing: CT reconstruction: CTAS (ctas.sourceforge.net), image pre- and post-processing imagemagick (www.imagemagick.org), 3D rendering vgstudio Max (volumegraphics.com movie composition: mencoder (www.mplayerhq.hu). Catherine, can you add some sample description please?