Two- and Three-Dimensional Reconstruction and Analysis of the Straw   Tubes Tomography in the Btev Experiment
  A check of the eccentricity of the aluminised kapton straw tubes used in the BTeV experiment is accomplished using X-ray tomography of the section of tubes modules. 2 and 3-dimensional images of the single tubes and of the modules are reconstructed and analysed. Preliminary results show that a precision better than 40 $\mu$m can be reached on the measurement of the straw radii. 
E.Basile, F.Bellucci, L. Benussi, M. Bertani, S. Bianco, M.A.   Caponero, D. Colonna, F. Di Falco, F.L. Fabbri, F. Felli, M....